Sheet metal Fold (SheetMetalFoldCmd): fold the base panel along a sketch line (followed when the sketch changes) or two points on its face; angle, bend radius and K-factor from the rule; the bend zone (BA = θ(R + K·T)) comes out of the existing sheet so the flat pattern keeps its size; the line at the bend's centre, start, end or on the mould line; the side holding a picked point stays (default the larger), flip folds down; flanges on the moving part ride along

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AS5Tn3xieewUSg3uxrMVdL

crates/doc/src/assembly.rs

@@ -193,6 +193,13 @@ impl FeatureKind {
             FeatureKind::Thread { face, .. } => pt(face),
             FeatureKind::SheetFlange { edges, .. } | FeatureKind::SheetHem { edges, .. } => edges.iter_mut().for_each(pt),
             FeatureKind::SheetConvert { face, .. } => pt(face),
+            FeatureKind::SheetFold { a, b, fixed, .. } => {
+                pt(a);
+                pt(b);
+                if let Some(f) = fixed {
+                    pt(f);
+                }
+            }
             FeatureKind::Boss { position, direction, .. } => {
                 pt(position);
                 dir(direction);