3 ms·Nor is ISO 10303-21 for CAD data (STEP).by phkahler 5y agoNor is ISO 10303-21 for CAD data (STEP).rjsw 5y agoThat isn't very useful without 10303-11 and at least one of the model definitions that you want to exchange.phkahler 5y agoOk, nothing under 10303 is there for free.