Sheet Metal DFM Checklist
Twenty-four design checks our process engineers run on a drawing before quoting it, in the order we work through them: material and thickness, holes, bends, welding, hardware and finish, assembly access. The boxes are for your own use — nothing leaves this page.
Material and thickness
0/4Holes and cut-outs
0/5Bends and forming
0/5Welding and joining
0/5Hardware, finish and assembly
0/5Ticking a box here does not change anything on our side — the state lives in this page only, nothing is sent anywhere. Work through it against a drawing and send the drawing; the review is part of quoting and costs nothing.
Questions about the DFM checklist
Drawn from the DFM review every enquiry goes through; the printable PDF is the same list.
Is this really the list you run?
It is the list an engineer works through on a new enquiry before it is priced. It is not a certification scheme and we do not score drawings against it — the point is that the expensive issues get raised while they are still free to change.
What happens if a drawing fails several checks?
Nothing bad. Each observation comes back with the price, usually with a suggested change and the reason. Where the change is a real cost saving we say so; where the drawing is right and the check simply does not apply, we leave it alone.
Can I get this as a printable file?
Yes — the download button takes the same list as a two-page PDF, sized to print and mark up by hand next to a drawing.
Does ticking a box send anything to WERIX?
No. The state lives in this page while it is open and is never transmitted or stored. If you want a review, send the drawing.
Keep going
Calculators — enter dimensions, get a number
Sheet Metal Weight CalculatorWeight per piece and per batch from L × W × t, with real alloy densities.Bend Allowance CalculatorThe neutral-axis length through a bend, from thickness, radius, angle and K-factor.Sheet Metal Cost CalculatorWhere a part’s cost actually sits — material, cutting, forming, finishing and setup.Press Brake Tonnage CalculatorBending force in kN and tons from thickness, material and bend length, with a 20% margin.K-Factor Calculator (Reverse)Reverse a K-factor from a real bend: outside dimensions and flat length in, K out.Hole-to-Bend Distance CalculatorMinimum hole-to-bend and hole-to-edge clearances from thickness and inside radius.Charts and checklists — read, print, work through
Sheet Metal Gauge to mm ChartSteel (MSG) and aluminium (B&S) gauge dimensions, and why we quote in mm.Sheet Metal RFQ ChecklistThe 12 items that make an RFQ quotable in one round, with the reason each matters.Sheet Metal Supplier Audit Checklist13 remote-verifiable checks for a sheet metal supplier, in four passes.Send the drawing — the review is free
Work through the list, change what matters, then send the drawing. Manufacturability review is part of quoting: anything that will cost you money is raised before the order, not after it.
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