I agree with you about software change risk.

I'd heard of OnShape on The Amp Hour podcast last year;

http://www.theamphour.com/242-cant-we-all-just-get-arduino-tardiloquent-tra=
demark-tirade/

"New CAD makers have been entering the market. Extremely well funded
OnShape has a browser based CAD tool (similar to Upverter) that has
been in development for 3 years. Perhaps this is the future?"

--=20
James Cameron
http://quozl.netrek.org/
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