The stability wasn&#x27;t there last time this was posted, but maybe they&#x27;ve made some improvements.  I do wish there was a distinction being made between maker-quality and production-quality software in some of these areas - being an engineer that uses CAD on a daily basis, this is cute but closer to CAPD (Computer Assisted Part Design) or some such.  Not to denigrate their work, but this is not a full-fledged CAD package - but it is above and beyond for hobbyist &#x2F; maker grade use.