Buildcore

Buildcore turns a STEP file into engineering output: auto-dimensioned PDF drawings, a grouped bill of materials, a 3D view in the browser and a searchable parts catalogue, all from one docker compose up. The studio runs bound to 127.0.0.1 on port 8800, and the same functions are available from a command line.

Part drawings use first-angle projection with views and dimensions placed automatically, choosing the first standard sheet size and scale where the views fit. Assembly drawings add front, top and right views plus a three-quarter view, balloons on every part and a parts list. The BOM groups identical parts and counts them even when copies are rotated or moved, and downloads as CSV or JSON.

Geometry is read with build123d on the OpenCASCADE kernel, and every number printed on a sheet is measured from the model, then read back from the finished sheet and compared with values recomputed from the geometry; a sheet that fails the check is not written. The catalogue stores measured length, width, height, volume, surface area, mass, bore and outer diameters, hole count and material in Postgres, with exact-range filters.