I would like to 3D print an 100 tooth pulley and have drawn it up in Inventor.

I've created a single tooth profile and have used the circular function to rotate it.

Sometimes when done I can extrude the sketch into a 3d part. Other times the sketch won't extrude.

Normally I would use the close loop function and walk my way around the line, but one tooth profile consists of 12 line segments and after using circular it's 1200 segments to walk over.

The sketch doctor seems to take forever to run and when it's done, it takes a long time to exit out of sketch mode.

I suspect this is because of the 1200 segments.

Is there a way to combine the 12 segments into 1 before using the circular function?

Are there other approaches I can take?

Thanks,

Arjay