Describe a part, get a STEP file

modelup plans a spec from your description, writes a parametric brepjs script, builds it with OpenCascade and has critics review the result. Give sizes in millimetres; anything you leave out gets a standard value.

Start from an example

• Flanged bearing housing for a 608 bearing: 40 mm flange with 4x M4 counterbored holes on a 30 mm PCD, 3 mm wall, 0.5 mm chamfers
• NEMA 17 motor mount L-bracket, 4 mm aluminium, slotted motor holes (6 mm travel) for belt tensioning, 2x M5 base holes, gusset rib
• Knurled thumb nut for M6, 20 mm diameter, 8 mm tall, diamond knurl, chamfered both sides
• Hinge assembly: two 40 x 30 x 3 mm leaves with 3 countersunk holes each, a 4 mm pin, 5 knuckles alternating between leaves