The Sheet Metal tab: flanges, hems, bends and a true flat pattern
Sheet metal parts can be made by hand. Base Flange/Tab, Edge Flange, Miter Flange, Hem, Jog, Sketched Bend, Break Corner, Closed Corner, forming tools (dimple, louver), Normal Cut, Unfold, Fold and Flatten are all here. Gauge tables set thickness, bend radius and K-factor, and the flat pattern exports as DXF with bend lines.
The flat pattern is computed from the bends, not estimated. Each bend unrolls about its axis and slides out by its bend allowance, BA = π/180 · θ · (R + K·T). A 90° bend at R2, T2, K0.44 in an L-bracket develops to exactly 126.524 mm. Hems, jogs and U channels match their closed forms too, and Unfold then Fold round-trips.
Tested by hand in the app: an electronics bracket in 16-gauge steel, with a base flange, two edge flanges picked in the canvas, a closed hem and four M4 holes. It flattens to 144.736 × 68.581 mm, the closed form. A Flat-Pattern row in the FeatureManager toggles the flat view, which shows bend lines with notes such as BEND UP 90° R1.5.
Cuts made while unfolded land in the right place when folded again. The agent has all 14 sheet metal tools.
Not yet: Convert to Sheet Metal, Insert Bends, Rip, Lofted Bend, Swept Flange, cuts across a bend region surviving unfold, multi-edge flanges, and the flat-pattern drawing view. Core parity is now 101 of 239.
- Added
- 14 sheet metal commands
- Gauge tables and K-factor bend allowance
- Flat pattern with bend lines, DXF export
- npm run test:sheetmetal
- Shipped in
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