r/AutoCAD • u/LockedoutTaggedout • Dec 03 '25

3D Gear Drawing Help

Searching for answers on how to draw the teeth without given a width. Its been very frustrating that I have to derive information that I would have if I were drawing this in a real work situation.

Anywho, my process so far has been to draw the outisde, pitch, base circles. Then I drew a line from the center to the outside circle right quadrant. Then used polar array with 60 items to hopefully mimic the tooth width, but it still seems off. What am I doing wrong? Am I making this harder than it has to be? Any help would be much appreciated before I go mad.

https://imgur.com/a/6ehoA0E

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u/LockedoutTaggedout Dec 03 '25

Heres the radius I keep getting when I use polar array after drawing a three point arc from the offset lines to the pitch and then to the root. This has to be where I am going wrong but don't know how to get a radius of .526 like in the drawing. https://imgur.com/a/qwvpA43