A caveat about Freecad: weird units. Always select "Imperial", not "US Customary" if you want to use inches. They are European and added "US Customary" at my behest, but screwed it up (deliberately, I suspect) by having it jump to feet and inches when you go over 12 inches and to yards, feet, and inches when over 3 feet. The only way to get everything in inches and decimal fractions thereof is to select "Imperial".
Freecad has better documentation than Solvespace IMHO. -- John Hasler jhas...@newsguy.com Elmwood, WI USA