@Ann_Effes @kkarhan @warmsignull /2
if I could quickly boot sheepshaver into Zorin Linux that is running 24/7 here, I might keep that old turboCAD* prog in mind for quick sketches of stuff. But https://snapcraft.io/sheepshaver gives the nearest presumably tested distro as Ubuntu. I just haven't got time for fiddling with complex installs if that isnt the case. I'll put this one on hold till a use for it pops up and comment whenever on the results.
*and to pre-emt "why dont you use this or that modern easy CAD" --- it's that I design by numbers: typing constraints into parameters fields, not dragging cursors around on screens then spending hours finding and correcting the 10-digit slop in some 5-click-to-access panel
garden / workshop calling ....