VT machining provides CNC Plasma Cutting Brass for customers who need accurate, repeatable Brass components. Because Brass is free-machining, good conductivity, attractive finish, we adapt the process to suit — controlling the variables that matter for this alloy.
Process Data for CNC Plasma Cutting Brass
| Max practical thickness | ~16 mm (high-definition plasma) |
|---|---|
| Edge tolerance | ±0.3-0.5 mm, 1-3° bevel |
| Heat-affected zone | ~0.5-1.5 mm (allow machining stock if critical) |
| Plasma gas | Nitrogen or argon-hydrogen |
Shown for C360 Brass, the most common Brass grade we see for CNC Plasma Cutting. Typical values for C360 Brass, Half-hard; confirmed on the first part.
CNC Plasma Cutting Capability for Brass
- Plate to 30+ mm
- High cutting speed
- Conductive metals
- Bevel-cut capable
Brass material properties, finishing options and grade notes are on our CNC Laser Cutting Brass page.
How CNC Plasma Cutting Brass Works
A focused fibre-laser beam melts and blows material from the Brass sheet along the programmed contour. Power, focal position, nozzle stand-off and assist-gas pressure are tuned to the alloy and thickness for a clean, square edge.
Programming is driven directly by your 3D model or print. Work-holding, tool selection and the cutting strategy are planned around the critical features and the material before the first chip is cut. First-off inspection confirms the process is centred before production continues.
Achievable Tolerances for CNC Plasma Cutting Brass
| Feature | Standard | Precision |
|---|---|---|
| Contour dimension | ±0.10 mm | ±0.05 mm |
| Hole diameter | ±0.10 mm | ±0.05 mm |
| Kerf width | 0.20 mm | 0.10 mm |
| Squareness of cut edge | 0.5° | 0.2° |
| Heat-affected zone | 0.15 mm | 0.05 mm (N₂ assist) |
| Minimum hole diameter | 1.2 × thickness | 1.0 × thickness |
| Edge condition | light dross | burr-free, N₂ cut |
Standard is what a normal quotation assumes. Precision is available on nominated features and is priced separately, because it needs extra setups, in-process gauging and CMM verification. Call out only the features that need it — blanket-tightening a drawing is the single most common reason a quote comes back expensive.
Design Tips for CNC Plasma Cutting Brass
We are happy to suggest design tweaks that improve manufacturability. Keeping holes no smaller than the material thickness, allowing for kerf, and grouping features sensibly improves edge quality and nesting yield on Brass. If you send your model early, we will return practical DFM feedback before you commit to production.
CNC Plasma Cutting Tolerances & Surface Finish
Laser-cut Brass holds contour tolerances around ±0.05 mm depending on thickness, with a narrow kerf and a clean, near burr-free edge.
Exact achievable figures depend on the alloy, the feature size and the part geometry. Tell us which dimensions are critical and we will advise feasibility up front.
Applications of CNC Plasma Cutting Brass
Customers order CNC Plasma Cutting Brass components for everything from instrumentation to structural and functional assemblies. Whether you need a single prototype or recurring production volume, the same process discipline applies.
Typical Brass Parts for CNC Plasma Cutting
Illustrative examples of CNC Plasma Cutting Brass parts and the callouts that usually drive the process plan. They show the kind of work that fits this process; they are not specific customer orders.
Control panel face
- Material
- Brass
- Size
- 400 × 300 × 1.5 mm
- Key callouts
- Cutout position ±0.10 mm, no dross on visible face
- Batch
- 600 pcs
Cut with nitrogen so the edge takes powder coat without secondary grinding.
Bracket blank
- Material
- Brass
- Size
- 250 × 120 × 4 mm
- Key callouts
- Contour ±0.10 mm, bend-relief notches
- Batch
- 800 pcs
Bend reliefs cut in at the same time so the press brake does not tear the corner.
Battery busbar
- Material
- Brass
- Size
- 180 × 30 × 2 mm
- Key callouts
- Contour ±0.08 mm, hole ±0.05 mm
- Batch
- 2,000 pcs
Copper is cut on the fibre laser with a reflective-material head; not every shop can run it.
No drawing yet? Build one in the browser.
Set the metal, dimensions and features, watch the 3D model update as you type, then switch to the 2D sheet to add dimensions and tolerances. Download it or send it straight to us with your RFQ.
What We Need to Quote CNC Plasma Cutting Brass
- GeometrySTEP or IGES for the 3D model, plus a PDF drawing if you have tolerance callouts. A dimensioned sketch is enough to start.
- MaterialThe exact Brass grade and condition — temper, heat-treat state or hardness. If you are not sure, tell us the function and we will suggest one.
- QuantityPrototype count and the expected annual volume. Both change how the part is made and therefore what it costs.
- TolerancesWhich features are critical. Everything else runs to our standard tolerance, which is what keeps the price sensible.
- FinishSurface treatment, cosmetic requirements, and any faces that must be masked.
- DocumentsWhether you need a material certificate, dimensional report, FAIR or PPAP with the shipment.
Missing something from the list is not a problem — send what you have. We will come back with the specific questions rather than a generic form.
Other Metals for CNC Plasma Cutting
Other Processes for Brass
Send the drawing, the Brass grade and the quantity. You get pricing, lead time and any DFM notes back — usually within one business day.
Request a QuoteFrequently Asked Questions
How clean are the edges produced by CNC Plasma Cutting on Brass?
Laser cutting leaves Brass with a narrow kerf and a clean, near burr-free edge and only a small heat-affected zone.
Can VT machining make custom Brass parts to my drawing?
Yes. Brass cutting is made to order from your CAD/2D drawing. Share your geometry, material grade, tolerance and quantity and we will confirm feasibility, lead time and pricing.
Why is Brass a good choice for CNC Plasma Cutting?
Brass is free-machining, good conductivity, attractive finish, which makes it well suited to CNC Plasma Cutting. We tune the process to the alloy so the finished Brass cutting part meets your dimensional and functional requirements.
What is the typical lead time and minimum order for CNC Plasma Cutting Brass?
CNC Plasma Cutting prototypes for Brass can be produced quickly and scaled to series production. Send your drawing and quantity and we will advise lead time and any minimum order.
Does CNC Plasma Cutting Brass require dedicated tooling?
Most Brass cutting work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.