Draw a screw etc

[engr_angelesdm]

is there anyone who could help me to draw screw and tool bit or drill bit?
i only know how to draw spring and other 3d objects but i find difficulty on those 2.
thanks!
your help is very much appreciated.

dante

[Mike.Perry]

Hi

Give the following links a read -

How to draw a 3D spiral in AutoCAD? (http://www.cadforum.cz/cadforum_en/qaID.asp?tip=836)

Draw 3D Screw Threads (http://www.cadalyst.com/cadalyst/article/articleDetail.jsp?id=81921)

Get your Helix here! (http://www.cadtutor.net/forum/viewtopic.php?t=1463&highlight=helix)

HELIX.ZIP (http://www.cadresource.com/library/lispdk.html)

Draw Helixes with a dialog box (http://www.cadpanel.com/autolisp_downloads.htm#Draw%20Helixes%20with%20a%20dialog%20box)

How to Model Screw with AutoCAD If You Must (http://www.caddigest.com/subjects/autocad/tutorials/select/SCREWS/SCREWS.HTM)

Creating a 3D Screw (http://www.caddigest.com/subjects/autocad/tutorials/select/southworth_3d_screw.htm)

Have a good one, Mike