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    #41 — Flange Bolt Circle

    This folder contains a working example that generates a STEP model for: a round flange with a central bore and a bolt circle of holes, built entirely from deterministic Profile2D helpers.

    The intent is that you can run the code here to emit a STEP file, open it in a CAD viewer, and/or import it into your slicer to 3D print and iterate.

    #What this example demonstrates

    • deterministic constraint helpers: bolt_circle, with_hole_at, with_bolt_circle (no solver runs at export time)
    • Profile2D holes with optional Fit clearance growth
    • exporting a clean STEP solid you can reuse in other tools

    #Parameters to try

    • --diameter / -d, --bore / -b, --bolt-circle, --bolts / -n, --bolt-hole, --thickness / -t

    #Run

    • From the moonbit-step root: ./examples/run-example.sh 41 -o flange.step

    #Suggested extensions

    • use fit=@cad.Fit::Free on the bolt holes for FDM printing
    • swap with_bolt_circle for with_grid_of_holes on a rectangular plate
    • add a tangent_rect outline instead of a circle

    #Variant 1

    Command line: ./run-example.sh 41

    #Variant 2

    Command line: ./run-example.sh 41 --diameter 80 --bolts 8 --bolt-circle 30 --thickness 10

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