Replying to 09/08 George P

All others on rec.photo.digital seem to know is dick-shaped salt shakers.

nobody here knows 3d which you found out after wasting your time asking

i haven't done 3d but online you might try https://www.selva3d.com/

offline you might try blender https://www.blender.org/

or inkscape https://inkscape.org/

or the pre nov 2017 version of sketchup https://www.sketchup.com/

pros use draftsight and fusion360
https://www.3ds.com/products-service...free-download/

-hth-