William Noble said:

you can buy an older version of turbo cadd on ebay for under $30 - there is
a "revolve" command - draw 1/2 profile and choose revolve and you can then
see your work in 3-D - fast, reasonably painless (once you know the secret
word "revolve") -

In AutoCAD, you may draw a complex 2D line shape and convert it into a
stepped 360 degree 3D poly using the Lathe command - Go figure...


Greg G.