I have done what you are trying to do …..but you have to blow the picture up as large as you can get into designer, make your pattern, then outline and scale it back down to get a decent gear.
I built an entire wooden clock doing that….never got a tick tock. the gears came out elliptical an ragged.
I spent two weeks on it then gave up……. bought DXF importer shortly after.
Brent
Brent
A,B machines, PE,probe,conforming vectors, centerline, 2d,3d,stl and dfx imprt, rotary , 3.xx, Pattern Sculptor
OS X Yosemite
Woodwork is what I do to pay for my tool addiction.