Workflow
AI CAD generator that shows its work
PurCad does not stop at a plausible preview. It keeps requirement checks, dimension sources and confidence, built geometry, assumptions, version history and selected-version downloads visible for review.
Use AI where the job can be measured
The strongest inputs describe a function, mating interfaces, available space, fasteners and expected load. A wall bracket with two measured hole positions is a better generation target than an object described only by style. PurCad keeps those constraints attached to the project.
Move from request to editable geometry
Write the requirement, include the dimensions that control fit, and choose a generation quality. PurCad builds geometry and exposes supported parameters in Sizes. Change a value deterministically and create a recoverable version without another AI call or generation-credit charge.
Review evidence before downloading
Use the 3D viewport, section view and measurements to inspect the built result. Check combines requested features with real OCCT geometry facts, blockers, risk and assumptions; Download prepares files only for the selected version.
Know what generation does not prove
A generated solid is a design draft, not certification of strength, fit or manufacturing safety. Verify material, tolerances, fastening and load cases with physical tests or qualified engineering review when failure could cause damage or injury.
Real case study
From a bicycle frame opening to a physical TPU prototype
A complete PurCad workflow with a measured interface, editable parameters, slicer evidence and a printed prototype.
View the TPU bicycle-frame plug