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Sheet metal drawing: flat pattern with bend lines and press brake tooling
DFM Guide · Laser Cutting

Tight kerf. Clean edge. Design for it.

Laser cutting produces precise cuts with narrow kerf and clean edges. Specific design considerations: kerf width, hole minimum, tab/slot fit, lead-in/lead-out for clean entry.

Design for manufacturingWuxi, ChinaMOQ 1 partDFM review included

What we cut.

Up to 20 mm

4kW fiber laser cuts mild steel up to 20 mm thickness. Faster speeds at thinner sheet.

Up to 12 mm

Stainless cutting requires nitrogen assist gas (no oxide on edge). Up to 12 mm typical.

Up to 8 mm

Aluminum reflective — fiber laser cuts efficiently. 6 mm 5052 typical thickness.

Up to 6 mm

Reflective metals — challenging but cuttable. Fiber laser preferred over CO2.

Up to 8 mm

Titanium with argon assist gas. Aerospace standard, premium cost.

Up to 6 mm

Zinc coating affects edge. Acceptable for most industrial.

Laser cutting DFM.

0.1-0.3 mm

Laser kerf 0.1-0.3 mm wide. Allow for kerf when designing tight-fitting features.

≥ thickness

Holes smaller than material thickness become slots. Specify ≥ thickness for round holes.

≥ thickness

Slots narrower than material thickness become impossible. ≥ thickness required.

2× thickness

Features within 2× thickness of edge may distort. Place ≥ 2× thickness from cut edge.

0.05 mm interference

Tab in slot fit: tabs slightly larger (kerf-compensated) for press fit. We adjust automatically.

R0.5 minimum

Sharp internal corners cause heat accumulation. R0.5 minimum, R1 better.

What edge to expect.

Laser cut edge: nearly square (slight bevel possible), Ra 3.2-12.5 µm depending on material/thickness/parameters. Generally acceptable for most applications.

Heat affected zone (HAZ): 0.1-0.5 mm zone of changed properties next to cut. Usually invisible. May affect heat-sensitive subsequent welding.

Burr: small burr possible on bottom surface from material expulsion. Specify deburr if mating surface or critical. Standard deburr included for most parts.

Surface finish: top surface mostly preserved; bottom surface sees melted material and gas blow. Inspection both sides before subsequent operations.

Advanced laser cutting.

Lead-in / lead-out

Bridges and tabs

FAQ

CO2 laser: cuts wood, acrylic, fabrics; medium for thin metal. Fiber laser: dominant for metal cutting, faster, better edge quality. Our fiber lasers handle metals up to 20 mm steel.

±0.1 mm standard. ±0.05 mm achievable with specific setup. For mating features requiring tighter tolerance, post-cut machining.

Practical: depend on laser power. 4kW: 20 mm steel, 12 mm stainless. Higher powers extend thickness. Above ~25 mm typical for plasma or waterjet.

Laser fastest for thin sheet (under 6 mm). Plasma cheaper for thick steel (above 12 mm). Waterjet for any material/thickness, slow. Choose per material+thickness combo.

Laser cutting low setup — file uploaded, cuts run. Per-piece cost low, even at small quantities. Often economical for prototype 1-piece quantities.

Aluminum, copper, brass cuttable with fiber laser. CO2 laser struggles with reflective metals. Brass and copper challenging at thicker sections.

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Send your CAD — we reply with detailed pricing, lead time, and DFM feedback within 4 working hours.

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WhatsApp our team directly. Most messages answered within 12 minutes during work hours.

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CNC, 3D printing, injection molding, sheet metal, casting, finishing — one quality system, one partner.

Working on a live project? Send the STEP file and the two or three features you are unsure about — an engineer replies with DFM notes and a price, usually within four working hours.

5-axis CNC milling drawing: Al 7075-T6 block with pockets, toolpath and dimensions

Send a CAD file. Get an engineering-reviewed quote.

No minimum quantity, free DFM feedback from a senior manufacturing engineer, and an NDA signed before file review on request.