Category Archives: Waterjet & Laser

A DXF can look perfect on screen and still cause delays at the cutting table. A duplicate line may cut twice. An open profile may leave a part incomplete. A drawing supplied in the wrong scale can turn a 100 mm bracket into an expensive surprise. Knowing how to prepare DXF files properly gives your cutting supplier a clear, production-ready drawing and helps keep your job accurate, efficient and on schedule.

For laser and waterjet cutting, the goal is not a visually impressive CAD drawing. It is clean geometry that tells the machine exactly where to cut, engrave or mark. A little preparation before sending the file can reduce programming time, material waste and unnecessary back-and-forth.

Start With the Correct Scale and Units

Set your drawing to full size, normally at a 1:1 scale. Do not scale the geometry to fit a page layout or rely on a note that says “dimensions in millimetres”. The actual geometry needs to be drawn at the required finished size.

For Australian fabrication work, millimetres are the standard choice. Confirm the DXF is set up in mm before export, particularly when the original design has moved between programs. CAD packages can interpret unitless DXF files differently, and a drawing created in inches may open 25.4 times larger or smaller than intended.

Include key dimensions on a separate reference layer if they help communicate critical requirements, but do not use dimensions as a substitute for accurate geometry. The cutter follows the lines and arcs in the file, not the dimension text beside them.

Before sending, measure at least one known feature in the exported DXF. Check an overall length, hole diameter or slot width. This simple check catches scaling errors early.

How to Prepare DXF Files With Clean Geometry

The cutting path should consist of closed, joined shapes wherever a part or internal hole is intended to be fully cut. A profile made from separate line segments can appear closed on screen but contain tiny gaps. Those gaps may prevent the CAM software from recognising the shape as a cuttable contour.

Use polylines where possible, and join line and arc segments into a single continuous path. For circles, use true circles rather than a collection of short segments. For curved details, use true arcs, splines that have been appropriately converted, or smooth polylines with a sensible number of points.

Overly complex geometry creates its own problems. Thousands of tiny segments may slow programming and leave a less consistent edge on tight curves. At the other extreme, a rough polyline can make a smooth radius look faceted. The best result is accurate, simplified geometry that reflects the shape you want made.

Remove duplicate entities. This is one of the most common DXF issues. Two lines directly on top of each other can cause the cutting head to travel the same path twice, increasing heat input for laser work and adding unnecessary cycle time for either process. Use your CAD program’s overkill, purge, audit or duplicate-object function before export.

Also delete construction lines, hidden alternatives, old revisions and geometry outside the required part area. If it remains visible and is on a cutting layer, it may be interpreted as a cutting instruction.

Check Open Contours and Intersections

Every outside profile and internal cut-out should be checked for gaps, overlaps and self-intersections. Zoom into corners, tangent points and small features rather than relying only on a full-page view.

Intersecting paths need particular care. If two profiles share an edge, the cutting strategy needs to be intentional. In some cases, common-line cutting can save time and material. In others, separate parts need a small gap to avoid an unwanted join or a fragile edge. Make the design intent clear rather than assuming the result will be obvious from crowded geometry.

For parts with very small internal details, consider the material thickness and the cutting process. A narrow slot that works well in thin stainless may be impractical in thick plate. Waterjet and laser each have different kerf widths, corner behaviour and minimum-feature considerations. If the detail is critical, supply the intended dimensions and discuss the material before finalising the design.

Use Layers to Show What Needs to Happen

Layers are useful when a job includes more than one operation. A clear layer structure helps separate through-cuts from marking, etching, fold references or non-cutting information.

Keep layer names plain and descriptive, such as CUT, ETCH, MARK or REFERENCE. Avoid relying only on colour because colours can change between CAD systems and plotting settings. If everything is a through-cut, one clean CUT layer is generally enough.

Text, centre marks, dimensions and notes should sit on a non-cutting reference layer unless they are intended to be marked onto the material. Where text is required as a cut-out feature, convert it to outlines and confirm that enclosed letters such as O, A, P and R retain their centres with suitable bridges. Without bridges, the middle section becomes a loose piece.

If your drawing includes a fold line or assembly mark, state whether it is for a light mark, an etch or reference only. A DXF cannot reliably convey that instruction unless the layer naming and accompanying job information are clear.

Build in Practical Manufacturing Allowances

A DXF should represent the finished part size unless your supplier has requested otherwise. Cutting software applies kerf compensation to position the cut relative to the drawing line. Manually offsetting profiles without agreement can make holes oversized or outside dimensions undersized.

Tolerances matter most on functional features. Identify dimensions that locate bearings, bolts, tabs, mating parts or machined follow-up operations. Not every decorative edge needs the same tolerance as a critical mounting hole, and calling out priorities allows the job to be planned accordingly.

Consider how the part will be used after cutting. Tabs and slots need appropriate clearance for material thickness, coating and assembly method. Long thin sections may be prone to movement during laser cutting, while tight internal corners may need a radius because a cutting stream cannot produce a mathematically sharp inside corner. This does not mean intricate work is off limits. It means the design should match the process and material.

Waterjet cutting is particularly valuable where heat distortion or a heat-affected edge would be a concern. Its cold-cut process can suit materials and thicknesses that are less suitable for laser cutting. Laser is often the faster option for certain metal profiles, especially where fine, clean detail and efficient production are required. The right choice depends on the material, thickness, edge requirement, tolerance and quantity.

Arrange Parts Clearly, but Do Not Over-Nest

If you need multiple parts, you can place them in a logical layout with sensible spacing and label each design on a reference layer. This helps identify revisions and quantities. However, avoid tightly nesting parts unless you have agreed on material size, sheet orientation, grain direction and required edge spacing.

The cutting team may need to change the nest to suit the available sheet, reduce waste, allow for clamping, improve cut quality or manage heat. For waterjet work, spacing and lead-in locations can also influence the most efficient approach. Supplying individual, clean part files is often the safest option for one-off or mixed jobs.

When material finish matters, add a clear note. Brushed stainless, painted aluminium, protective film and decorative sheet may have a preferred face or grain direction. A DXF alone cannot communicate every handling requirement.

Export the DXF, Then Inspect It Again

Export rather than simply rename another drawing format. Use a widely compatible DXF version if your software offers a choice, and make sure the export preserves the required geometry. Some programs convert splines, blocks, hatches and text in ways that are not suitable for cutting.

Open the exported DXF in a viewer or a different CAD program where possible. Confirm that the drawing opens correctly, the scale is right, all profiles are present and reference layers have not become cutting geometry. This is especially worthwhile when exporting from design software that is not primarily CAD-based.

Send the DXF with the material type, thickness, quantity and any important requirements. Include whether the job needs laser or waterjet cutting if you have a preference, but remain open to process advice where speed, edge quality or material integrity points to a better option.

A clean DXF is more than an attachment. It is the starting point for accurate parts, reliable quoting and efficient production. If a design is unusual, highly detailed or critical to an assembly, a quick pre-production conversation can be the most practical step. Waterjet & Laser SA can review the cutting requirements and help turn a sound drawing into a part that performs as intended.

A burr on the underside of a laser-cut part may look minor, but it creates real cost further down the job. It can slow welding and assembly, damage powder-coated finishes, affect fit-up and leave sharp edges for installers to manage. Knowing how to prevent laser burrs starts with treating edge quality as part of the cutting specification, not a clean-up task left for the workshop.

Laser burrs are usually the result of molten material failing to leave the kerf cleanly. The cause may be a cutting parameter, an assist-gas issue, material condition or machine set-up. In practice, the best result comes from matching all of these variables to the material, thickness and required finish.

What causes laser burrs?

During laser cutting, the beam melts or vapourises a narrow line of material while assist gas clears the molten metal from the cut. A clean edge needs the beam, gas flow and machine motion to work together. If the melt is not fully expelled, it can solidify along the lower edge as dross or burr.

Burrs are more common when cutting speeds are too slow, gas pressure is insufficient, focus is incorrectly positioned or the nozzle is not centred over the beam. Excessive speed can also create roughness, incomplete cuts and intermittent burrs. The right setting is not simply the fastest or slowest option. It is the setting that produces a stable kerf and a clean exit edge for that particular job.

Material condition matters as well. Surface scale, rust, oil, inconsistent thickness and protective coatings can alter how heat enters the sheet and how molten material flows. Two sheets of nominally identical steel can cut differently if their surface condition or composition varies.

How to prevent laser burrs before cutting begins

The first opportunity to control burrs is before the sheet reaches the machine. Confirm the material grade, actual thickness, finish requirement and whether the component will be welded, folded, painted or handled directly after cutting. These details influence the process selected and the acceptable level of edge dressing.

A clean, flat sheet gives more consistent results. Heavy mill scale, corrosion, contamination and uneven protective film should be identified before production, particularly where a cosmetic edge is required. If the material has distortion or does not sit flat on the bed, nozzle height can vary through the cut and edge quality can suffer.

Part design also has a role. Very small holes, tight internal corners and narrow webs hold heat differently from long external profiles. A drawing that looks straightforward may require slower contour settings, different lead-ins or a modified cutting sequence to maintain a clean edge. This is especially relevant for intricate architectural panels, brackets and parts with repeated small features.

For production work, specify the critical edges rather than assuming every edge needs the same finish. A hidden edge in a welded frame may tolerate light dross, while an exposed stainless steel face or a component handled by the public may need a cleaner cut. This helps the cutting provider select a practical process without adding unnecessary time to the job.

Set the laser, focus and speed for the material

Power, speed and focal position are closely linked. Increasing power without adjusting speed or focus can increase the melt volume and leave more material for the assist gas to remove. Reducing speed too far can do the same, producing a heavy bead of dross along the underside.

Focus position is one of the most influential settings. For a given material and thickness, the focal point must be positioned to support a narrow, stable cut through the sheet. If focus is too high or too low, the kerf can widen, cut striations can increase and molten metal may not clear effectively at the bottom of the cut.

A proper test cut is more useful than relying on generic settings. Check both the top and bottom edges, inspect holes as well as outside profiles, and look for changes in quality around corners. A part may look clean along straight runs but show burrs where the machine decelerates or changes direction.

Where burrs appear only on selected geometry, the answer may be contour-specific settings rather than a broad change to the entire program. Small holes and fine detail often need different speed, power or pulse settings from larger external profiles. This takes more programming care, but it can remove hours of manual finishing across a batch.

Use the right assist gas

Assist gas is not just there to blow debris away. It affects cutting reaction, edge appearance and burr formation.

Oxygen is commonly used for carbon steel because it supports an exothermic cutting reaction, allowing efficient cutting at suitable thicknesses. The trade-off is an oxidised edge, which may require consideration before coating or welding. Poor oxygen pressure, purity or flow can contribute to dross and inconsistent edge quality.

Nitrogen is often selected where a clean, oxide-free edge is preferred, particularly for stainless steel and aluminium. It clears the molten material without creating an oxygen-assisted reaction. Nitrogen can deliver an excellent finish, but it requires sufficient pressure, clean supply and correctly matched settings. Using it does not automatically guarantee a burr-free edge.

Gas choice should be based on the material and the part’s next operation. For example, a stainless component heading to a visible installation may justify nitrogen cutting, while a carbon steel component going straight into fabrication may have different priorities. The required finish, cost per part and turnaround all need to be weighed together.

Keep the nozzle and optics in working order

Even well-developed cutting settings cannot compensate for poor machine condition. A damaged nozzle, blocked gas path or misaligned beam disrupts the gas stream and reduces its ability to eject molten metal. The resulting burr may appear as a persistent issue across otherwise unrelated jobs.

Nozzle centring is particularly important. The laser beam must pass centrally through the nozzle opening so the gas surrounds the cut evenly. If it is off-centre, one side of the kerf may be cleaner than the other, and dross can become more pronounced.

Regular checks should include nozzle condition, nozzle height calibration, lens and protective-window cleanliness, gas pressure and beam alignment. Consumables are small compared with the labour cost of grinding hundreds of parts. For repeat production, recording proven settings and inspection results makes it easier to spot drift before it affects a full run.

Control heat on detailed and nested parts

Burrs are not always caused by a single bad parameter. Heat can build up in small parts, closely nested profiles and complex patterns. As the sheet warms, cutting behaviour changes. Thin webs may move, narrow sections can lose heat quickly or retain it, and the gap between parts may become less stable.

A considered cutting sequence helps. Spacing sensitive components, cutting internal features before outside profiles and avoiding unnecessary heat concentration can improve consistency. Micro-joints also need care. If they are too heavy, breaking parts free can leave a burr or tear; if they are too light, parts can tip or move during cutting.

For decorative screens and highly detailed panels, cut quality must be assessed across the entire sheet, not only on the first few profiles. A program that protects fine detail and manages heat will usually produce cleaner parts and less manual handling afterwards.

When waterjet is the better way to avoid burrs

Some jobs are better suited to waterjet cutting than laser cutting. Waterjet is a cold-cut process, so it avoids the heat-affected zone, thermal distortion and recast material associated with thermal cutting. It is particularly useful for thick materials, heat-sensitive materials, reflective metals, laminated products and jobs where maintaining material integrity matters more than cutting speed.

Waterjet cutting can still leave a textured edge depending on quality settings and speed, so it is not a universal substitute for laser. However, it avoids the molten-metal dross that causes typical laser burrs. For aluminium, stainless steel, rubber, foam, tile, timber and mixed-material jobs, comparing both processes early can prevent a costly finishing problem later.

At Waterjet & Laser SA, having both CNC laser and waterjet cutting onsite allows the process to be selected around the part, rather than forcing every job through one machine. That is often the most practical path to precision cutting, reliable lead times and a finish suited to the final application.

Inspect the edge that matters

Do not judge cut quality only from the top face. Turn the part over and inspect the underside, corners, holes and lead-in area. Run a gloved hand carefully along non-critical test pieces, or use a simple edge criterion agreed before production. If parts are heading to powder coating, folding or assembly, test one through the next operation before approving a large batch.

A small amount of removable dross may be acceptable on some fabrication work. The key is to agree on that tolerance early. When a burr is unacceptable, the correct response is to review material, gas, focus, speed and machine condition in a controlled order rather than simply adding more power.

Clean laser-cut edges are achieved through preparation and process control, not luck. Give the cutting method the same attention as the finished part, and the result is less rework in the workshop and more dependable components at installation.

A part can be dimensionally accurate and still cause trouble on the workshop floor. Laser cutting burrs – the sharp, raised material left mainly on the underside of a cut – can affect handling, paint preparation, welding, assembly and the final appearance of a job. For fabricators and project managers, the issue is not simply whether a burr exists. It is whether the edge condition suits the part’s end use without adding avoidable labour.

On high-definition laser work, a clean edge is the result of the right machine settings, material condition and cutting process working together. Understanding where burrs come from makes it easier to specify parts properly and select the most economical finishing route.

Why Laser Cutting Burrs Occur

Laser cutting uses a focused beam to heat and melt material along the programmed profile. Assist gas then blows the molten material, commonly called dross or slag, out through the kerf. When that material does not clear efficiently, it can cool and adhere to the lower edge. The result may be a light, easily removed feathered burr or a heavier bead that needs grinding.

The most common cause is a mismatch between cutting parameters and the material. Cutting speed, laser power, focal position, nozzle condition and gas pressure all influence how well molten material exits the cut. A setting that produces a clean edge in 3 mm mild steel may leave significant dross on a thicker plate, even when the drawing and machine programme are correct.

A laser travelling too quickly may not fully penetrate the material or may leave melt behind at the lower edge. Travelling too slowly can put excessive heat into the cut, creating a wider kerf and more molten material than the gas stream can effectively remove. The ideal window depends on material grade, thickness and the required edge quality.

Focus position matters as well. If the focal point is not set appropriately for the plate thickness, energy distribution through the cut becomes less effective. The top of the edge can look clean while the bottom develops a burr, particularly on heavier sections. Nozzle alignment is equally important. Even a small offset can disrupt gas flow and reduce the clearing action needed for a crisp lower edge.

Material condition adds another variable. Rust, scale, mill finish, surface contamination and variations between batches can change the way a sheet responds to the laser. Aluminium and stainless steel also behave differently from mild steel, requiring suitable gas selection and process settings. This is why reliable cutting is not just a matter of pressing start on a programme.

Burrs Are Not Always a Cutting Fault

It is useful to separate a normal laser-cut edge characteristic from an unacceptable finish. Fine striations on a laser-cut edge are expected. A very light burr may also be acceptable on brackets, internal components or parts that will receive further fabrication. Removing it could add cost without improving the performance of the completed assembly.

The standard should be higher where people will touch the part, where components need a flush fit-up, or where the edge is visible in the finished product. Decorative architectural panels, balustrade components, retail displays, handrails, precision tabs and slots, and powder-coated items often need a cleaner edge specification. Burrs can interfere with coating adhesion and create sharp points that remain obvious after painting.

For components that are welded, a burr can prevent close contact between mating faces or make clamping less consistent. On assemblies with tight tolerances, even a small raised edge can affect how a tab locates in a slot. The burr may be small, but the downstream delay is not.

The practical question is: what does the next operation require? If a part is heading straight to a press brake, welding bench or paint line, edge quality should be considered before cutting begins. That allows the cutter and fabricator to agree on a suitable process rather than discovering a finishing requirement after delivery.

Controlling Laser Cutting Burrs Before Production

The most cost-effective burr removal is the burr that is never created. That begins with clear job information. Material type, grade, thickness, quantity, visible faces, coating requirements and any critical fits should be known before the cutting method is selected.

For repeat production work, test cuts are valuable. They confirm edge quality on the actual material rather than relying only on nominal settings. This is particularly worthwhile when a job includes thicker steel, a new material supplier, close-fitting tabs and slots, or components that will be powder coated. A small trial can prevent a large batch from needing unnecessary hand finishing.

Part design also has a role. Very small holes, narrow slots, tight internal corners and closely spaced features hold heat differently from open external profiles. These details may need adjusted lead-ins, reduced speed or sequencing that manages heat build-up. Sheet distortion is a separate but related concern. Where heat input is likely to affect flatness or material properties, another cutting method may be a better fit.

Operators can address process-related burrs through correct focus, nozzle centring, suitable assist gas, clean consumables and well-matched speed and power settings. These are controlled production variables, not guesswork. However, there is always a trade-off. Chasing the finest possible edge finish can reduce cutting speed and increase the cost per part. The right result is one that meets the job requirement efficiently.

When Secondary Deburring Makes Sense

Some parts need post-cut finishing regardless of how well they are cut. Heavy plate, safety-sensitive components and products with a premium visible finish may be sent through a linisher, deburring machine, vibratory finishing process or manual edge-break operation. The choice depends on quantity, geometry and the required finish.

Manual grinding is flexible for one-off or low-volume work, but it can be labour-intensive and inconsistent across a large batch. Mechanical deburring is more efficient for suitable flat parts, although it may not reach intricate internal features. For highly detailed profiles, finishing allowances should be discussed early so the process does not alter critical dimensions or decorative detail.

An edge break is not the same as removing dross. Edge breaking deliberately softens a sharp corner, while dross removal takes away adhered molten material. A part may need one, both or neither. Specifying the result in plain language helps: for example, “remove sharp edges for safe handling” is different from “visible face to be free from dross prior to powder coating”.

When Waterjet Is the Better Edge Solution

Laser cutting is fast, accurate and highly efficient for many metal profiles, especially production work in suitable sheet thicknesses. But it is not always the best process for every material or finish requirement. Waterjet cutting uses a high-pressure stream, up to 60,000 PSI, to cut without a heat-affected zone. Because it is a cold-cut process, it avoids heat distortion and does not create laser dross in the same way.

That makes waterjet a strong option for materials sensitive to heat, thicker sections, mixed-material projects and parts where preserving material integrity is critical. It can also cut materials that are not normally laser-cut, including rubber, foam, tile, stone, timber and certain composites. Waterjet is generally slower than laser on thinner metal sheet, so the best choice depends on the job’s priorities: speed, edge condition, material type, thickness, tolerance and budget.

Having both processes available onsite allows a practical decision rather than forcing every job through one machine. At Waterjet & Laser SA, that means customers can discuss the finished requirement first, then select the cutting method that supports it.

Specify the Edge You Actually Need

A clean laser-cut edge is not merely cosmetic. It protects workshop efficiency, reduces handling risk and helps downstream operations run as planned. Yet a burr-free specification is not automatically the right choice for every component, particularly when a light edge condition has no effect on fabrication or function.

Bring the part’s intended use into the conversation at quoting stage. If the component must fit precisely, be handled safely, receive a premium coating or remain visible in the completed project, say so. The best cutting outcome is the one that arrives ready for the next operation, with no surprises waiting at the edge.

Which Cutting Method Costs Less?

A fast quote can be misleading when the part arrives warped, needs secondary finishing, or cannot meet the drawing tolerance. When customers ask which cutting method costs less, the useful answer is rarely just a per-minute machine rate. For most fabricated components, laser cutting costs less on thin-to-medium metal work where speed is the deciding factor. Waterjet can cost less overall when heat would damage the material, when the job involves non-metals, or when avoiding rework matters more than cutting speed.

The right process depends on the full job: material, thickness, cut length, number of pierces, tolerance, edge requirement, quantity and delivery timeframe. A lower initial cutting price is only a saving if the finished part is fit for fabrication, installation or assembly without extra work.

Why laser cutting is often the lower-cost option

Laser cutting is usually the economical choice for carbon steel, stainless steel and aluminium sheets within its effective cutting range, particularly when parts are relatively thin and quantities are moderate to high. A high-definition CNC laser moves quickly, produces accurate profiles and can nest many components efficiently on a sheet. That means fewer machine hours allocated to each part.

Speed is the major advantage. If you need dozens or hundreds of identical brackets, panels, gussets, tabs or machine components in thin sheet, laser cutting generally provides the lowest cost per part. Shorter cycle times also help when a fabrication schedule is tight. The work can move from cutting to bending, welding or assembly sooner.

Laser cutting also produces a narrow kerf. This allows efficient nesting and reduces material waste, which is significant on stainless steel, aluminium and other higher-value sheet products. When every square metre of material is accounted for, good nesting can make a noticeable difference to the final quote.

For straightforward sheet-metal profiles, laser-cut edges are usually clean enough for the next fabrication step. That can remove or reduce the need for manual trimming. On a part that will be powder coated, welded or concealed within an assembly, laser is often a highly practical and cost-effective answer.

The conditions that can add cost to laser work

Laser is not automatically the cheapest choice for every metal job. Thick plate slows the process considerably, and some materials need careful handling to achieve the required cut quality. Highly reflective metals, for example, may have limitations depending on thickness and specification.

Heat is the other consideration. Laser cutting creates a heat-affected zone at the cut edge. On many jobs this is not a concern. On thin material, narrow features, close tolerances or components that must remain perfectly flat, however, heat can introduce distortion or leave an edge condition that needs further treatment. If parts require straightening, machining or refinishing afterwards, the apparent saving can disappear.

When waterjet cutting costs less overall

Waterjet cutting uses a high-pressure stream of water, up to 60,000 PSI, combined with abrasive where required. It is a cold-cut process, meaning there is no heat-affected zone and no heat distortion. While waterjet is often slower than laser on thin sheet metal, it can be the more economical solution when that cold-cut advantage prevents downstream problems.

For thicker metal, intricate profiles and materials that are sensitive to heat, waterjet can reduce the total production cost. The edge remains free from thermal damage, making it suitable for components that need to retain their original material properties. This can be particularly valuable for engineering parts, precision fabrication work and pieces that will be machined or assembled after cutting.

Waterjet also has much wider material versatility. It can accurately cut steel, stainless steel, aluminium, tile, pavers, stone, rubber, foam, gasket materials, timber and many other products that are unsuitable or less practical for laser processing. A single process that handles mixed materials can simplify a project and avoid the cost of organising multiple suppliers.

Consider a custom gasket run, a decorative stone inlay or a thick aluminium component with fine internal detail. Laser may not be appropriate for one or more of those materials, while waterjet can produce the profile without burning, melting or discolouring the edge. In that situation, comparing only the hourly rate misses the point. Waterjet is less expensive because it delivers the required finished result in one cutting process.

Waterjet costs to factor into a quote

Waterjet cutting has its own cost drivers. Abrasive consumption, cutting speed and cut thickness all affect the price. A long, intricate profile in thick plate takes time, especially where the drawing includes many small holes, sharp corners or internal cut-outs. Tighter tolerances may also call for a slower, higher-quality cutting setting.

That does not make waterjet a premium-only process. It simply means the value is strongest where precision, material integrity and versatility are essential. For a thin mild-steel blank with simple geometry, waterjet may be more than the job requires. For a heat-sensitive or non-metal part, it may be the process that avoids unnecessary risk and expense.

Compare the total cost, not only the cutting rate

The most useful comparison starts with the finished component rather than the machine. Ask what happens after cutting. Does the edge need deburring? Will the material be bent, welded, polished, painted or machined? Could heat distortion affect fit-up? Are there costly consequences if a part is out of tolerance?

A laser-cut component may have the lowest direct cutting charge, but a waterjet-cut equivalent could be cheaper once secondary operations are included. Conversely, specifying waterjet for a large batch of uncomplicated thin steel parts may add cost without delivering a meaningful benefit over laser.

Material yield belongs in the same calculation. Efficient nesting reduces offcuts, and it becomes increasingly important on high-value materials or large production runs. Part geometry also matters. A design with dozens of pierces, tiny holes and excessive cut length will cost more with either process than a simplified profile that achieves the same function.

Quantity changes the answer as well. For a one-off prototype, programming, setup and material handling are a larger share of the job cost. For repeat production, cutting speed, nesting efficiency and consistency take over. Providing an accurate drawing early helps a cutting provider select the best method and quote from the actual requirements rather than assumptions.

Choosing the lower-cost method for common jobs

For thin mild steel brackets, cabinets, base plates and production sheet-metal parts, laser cutting will commonly provide the better price and faster turnaround. It is built for speed, repeatability and efficient use of sheet.

For thick plate components, detailed stainless steel profiles, precision aluminium parts and work where flatness is critical, waterjet deserves close consideration. Its cold-cut process can protect the part from heat-related movement and reduce finishing requirements.

For rubber, foam, gasket materials, tile, stone, timber and mixed-material projects, waterjet is generally the practical option. It opens up designs that laser cannot process in the same way, while delivering a clean, accurate profile.

Architectural work often sits between the two. Laser is an excellent option for metal screens, signage and decorative steel features where speed and detail are needed. Waterjet may be preferable for intricate inlays, thicker material, stone features or designs combining very different materials.

Get the process matched to the part

The lowest-cost cutting method is the one that produces a compliant part with the least total time, waste and rework. Sending through the material grade, thickness, quantity, tolerances, finish expectations and a clear drawing gives the cutting team the information needed to make that call confidently.

With onsite CNC laser and waterjet capability, Waterjet & Laser SA can assess both options against the same job rather than forcing a project into one process. That means Adelaide fabricators, builders, manufacturers and designers can choose on practical value: accurate parts, dependable turnaround and a result ready for the next stage of work.

Before approving a quote, look beyond the first line item. A well-matched cutting process protects your material, your schedule and the quality of everything that follows.

A well-designed screen does more than fill an opening. Metal screens can define an entry, soften a harsh façade, create privacy without blocking every bit of light, or add a repeatable architectural detail across a commercial project. But the finished result depends on more than selecting an attractive pattern. Material choice, sheet thickness, opening size, fixing method and cutting process all influence how the screen looks, performs and lasts.

For builders, fabricators, designers and project managers, getting those decisions right early avoids costly rework later. A screen that looks effective in a drawing still needs enough strength at its fixing points, appropriate clearance for its location and a cut quality that suits the final coating or finish.

What Metal Screens Need to Do

The first question is not which pattern to use. It is what the screen needs to achieve on site. A decorative garden feature has different requirements from a balustrade infill, equipment enclosure, security panel or large façade element exposed to Adelaide weather.

Privacy screens usually need a balance between visual cover and airflow. Smaller openings improve privacy, but they can also reduce ventilation and make the panel feel visually heavy. Larger openings create a lighter appearance and allow more air through, although they may expose more of the area behind the screen. The viewing angle matters too. A pattern that provides good privacy from directly in front may be more open when viewed from the side.

Shade is similarly dependent on the pattern and orientation. Screens on a west-facing wall may need a denser layout than a feature panel under a covered verandah. For commercial applications, consideration should also be given to cleaning access, drainage, panel replacement and the ability to remove or service equipment behind the screen.

Where a screen has a safety, security or compliance-related role, decorative intent comes second. Hole size, sheet thickness, edge treatment, frame design and fixing specification should be confirmed for the particular application. A laser-cut feature panel is not automatically suitable as a structural or protective barrier simply because it is made from metal.

Selecting the Right Material

Steel, stainless steel and aluminium are common choices for metal screens, each with practical advantages.

Mild steel for strength and character

Mild steel is often chosen where a heavier industrial appearance, high strength or a painted finish is required. It can be an economical choice for larger screens, especially when the panel will be framed and powder coated or finished in a protective paint system.

Unprotected mild steel will corrode outdoors. That may be intentional for weathering steel applications, but it must be designed properly. Rust runoff can stain paving, walls and surrounding surfaces, particularly during the early weathering period. Standard mild steel should not be installed outside with the assumption that a decorative coating alone will overcome poor detailing or trapped moisture.

Stainless steel for demanding environments

Stainless steel provides excellent corrosion resistance and a clean, premium appearance. It suits coastal locations, food-related settings, public areas and projects where the screen will be exposed to regular cleaning or moisture. Grade selection still matters. A stainless screen near the coast requires a specification appropriate for that environment, as well as sensible fabrication and cleaning practices.

Stainless steel can show fingerprints, water marks and scratches more readily than darker coated materials. The selected finish, whether brushed, satin or another treatment, should suit the amount of handling and maintenance expected.

Aluminium for lighter installations

Aluminium is lightweight, corrosion resistant and well suited to powder coating. It is a strong option for gates, overhead features, fence infills and projects where reducing weight helps with installation or support structure requirements.

Its lower weight does not mean thickness can be overlooked. Large aluminium panels may need folds, frames or intermediate supports to control movement and maintain a flat appearance. This becomes especially important when wide sheets include open patterns that reduce the remaining material between cut-outs.

Pattern Design Is Also Engineering

Decorative screen patterns need enough material left behind to hold the panel together. Fine detail can look impressive, but narrow bridges between cut-outs may distort, become vulnerable during transport or create a panel that flexes more than expected once installed.

The most effective designs consider scale. A small floral or geometric pattern may work beautifully on a pedestrian gate but appear busy or weak when enlarged across a three-metre-wide façade. Conversely, a design with large open areas may look striking from a distance yet offer limited privacy up close.

Designers should also consider the screen border. A solid perimeter can provide a clean visual edge and valuable strength for fixing, framing and handling. It gives installers a clear zone for fasteners and reduces the risk of cutting through fine pattern detail when panels need to be trimmed or fitted on site.

For repeat panels, pattern alignment deserves attention before cutting begins. A design may need to continue across several sheets, mirror around a corner or line up with posts, doors and window openings. Supplying overall elevations, panel numbers and clear dimensions helps avoid ambiguity and makes installation faster.

Choosing Laser or Waterjet Cutting

The cutting method should match the material and design requirements. Both CNC laser cutting and waterjet cutting can produce accurate profiles, but they work differently and offer different benefits.

Laser cutting is highly efficient for many steel, stainless steel and aluminium screen projects. It is particularly effective where fast production, detailed profiles and clean edges are required. For repeated architectural panels or production quantities, laser cutting can provide an economical and consistent result.

Waterjet cutting uses a high-pressure stream of water, with abrasive added when cutting hard materials. At pressures up to 60,000 PSI, it cuts without introducing a heat-affected zone. This cold-cut process is valuable when material integrity, heat sensitivity or distortion are major concerns. It is also suitable for a much wider range of materials than metal alone, which can be useful where a project combines metal details with tiles, stone, rubber or other components.

There is no single best option for every screen. Laser is often the practical choice for speed and cost efficiency in suitable metals. Waterjet may be the better choice for thicker sections, heat-sensitive work or specialised material requirements. Reviewing the drawing, material and intended finish before production allows the most appropriate process to be selected.

Details That Protect the Finished Screen

A precision-cut panel can still fail to perform if the installation details are poor. Outdoor screens should be designed so water can drain away rather than sit in horizontal folds, channels or enclosed corners. Dissimilar metals need careful separation where galvanic corrosion could occur. Fixings should suit both the panel material and the supporting structure.

Allowances for movement are another practical consideration. Long aluminium panels, in particular, can expand and contract with temperature changes. Tight fixing arrangements can lead to bowing, noise or stress around fastener holes. A fabricator or installer can advise on appropriate slots, clearances and support spacing for the panel size and material.

Coating should be planned before cutting where possible. Powder coating adds protection and colour, but it will not hide poor edge quality, weld spatter or handling damage. If a panel will be galvanised, allow for the effect that process may have on fine openings, threaded areas and overall dimensions. For corten-style weathering steel, plan the drainage path and keep staining in mind from the start.

Information That Speeds Up Production

Clear information produces better outcomes and more reliable lead times. A workable request includes the finished panel dimensions, material type and thickness, quantity, drawing file where available, required tolerances, preferred finish and any critical fixing locations.

A DXF file is ideal for CNC profiling, but a dimensioned PDF, sketch or reference image can still be useful during the quoting stage. If a screen pattern has been sourced from a concept image, it may need to be redrawn into a cut-ready format. It is worth confirming ownership or permission to reproduce a supplied design before it enters production.

For larger projects, identify which face is front-facing, how panels are numbered and whether any edges need folding, framing or welding after cutting. These details are simple to clarify before manufacture and difficult to correct once a batch has been processed.

Make the Screen Work Beyond the Drawing

The strongest metal screen projects bring design, fabrication and installation together early. A pattern should look good, certainly, but it should also suit the chosen material, survive handling, accept its finish and be straightforward to install.

For Adelaide projects requiring accurate, custom-profiled panels, Waterjet & Laser SA can help assess whether laser or waterjet cutting is the right fit before production begins. Start with the screen’s job on site, then let the material, pattern and cutting method support that purpose. That is how a feature panel becomes a reliable finished element rather than a detail that only worked on paper.