新增cdsl

2026-08-24 14:52:08 +08:00
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+# CDSL Bridge: Simple Shaft
+
+- Use for a single cylindrical rod, pin, spacer, or stepped shaft, not an assembly.
+- Invariants: one main axis, one coherent solid, axial segment lengths/diameters, and secondary features referenced to the axis.
+- Use a circle plus `extrude_add_blind` for a uniform rod; use a closed side profile plus `revolve_add` for steps, shoulders, tapers, or grooves.
+- Add end holes, flats, slots, or keyway-like cuts only after the primary body. Finish last.
+- Do not invent bearings, gears, couplings, or real thread geometry when not requested.