Hi!!Mike Spenard, this was the mail you write to All on 11-03-96:
MS> im tring to draw 3d screw threads in acadr13 ...could someone give me 
ome
MS> tips on how to do this.. i would think i would revolve a section of the
MS> thread around a 3d spiral but how do i draw a 3d spiral?
    There is an Autolisp "SPIRAL.LSP" can draw a 2D or a 3D spiral.
    2D spiral is drawn by 2D polyline, 3D spiral is drawn by 3dpoly.
    This program seems to be included in ACAD R11.  :)
-+- OLMS 2.53 UNREG
--- Julian Lab / BBSNI 0.42à(author)
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