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> FORGE
Web-based parametric CAD built for people who actually print things.
01. 01. PARAMETRIC, NOT FREEHAND
Eleven primitives — box, cylinder, sphere, cone, ring, wedge, dome, tube, hex, pyramid and real 3D text — placed by click and combined with join, cut, overlap, mirror, align and linear arrays. Every part stays numeric, so a dimension is edited rather than re-sculpted, which is the whole difference between CAD and modelling.
02. 02. THE BUILD PLATE IS THE CONSTRAINT
Bed lock, dimensions, snapping and an analysis view are first-class controls rather than an export-time check. The tool is for people who print, so the print volume is present from the first shape instead of arriving as a failure at slice time.
03. 03. BRING A MODEL YOU ALREADY HAVE
STL and 3MF import make it a remix tool as well as an authoring one — the common real job is cutting a hole in someone else's model, not starting from an empty plate.