August 2014, with time on my hands, and having bumped into a post by Murray (I seem to recall) that used the term "involute gear", I went on a Google search to find out what that meant.
I happened into the same "cartertools..." website that Ed just linked.
I enjoyed creating a gear using the instructions in that article (I like following instructions... making repairs, a recipe, or building stuff from instruction).
Below is from August 2014, via TurboCAD 19-Deluxe. It would have been simple enough to make it 3D.
« Last Edit: November 26, 2016, 09:09:34 AM by Alvin Gregorio »
(mostly Residential Architectural 2D; no formal CAD Training; intermittent TurboCAD user since yr. 2000 [ver6.5])
---TurboCAD: V20.2PP(57.0)[as of 3/12/15]; V19DL(54.2); V11.2Pro; Windows-7-Pro/64-bit; Intel-Core-i3 CPU; 2.27ghz; 4GB RAM; Intel HD Graphics (CPU based)