This is an anti-rotation gear. I am actually trying to create the other side of this, but I can’t get a picture of it but it mates with this so that should be sufficient. They are screwed together to hold the parts in place so they don’t rotate.
The other side has this pattern going about 3 times farther in and it gets shallow nearer the center. The valleys actually appear to rise.
But all I really need is the mate to this. I just am lost as to how to create this.
It is about 15 mm dia and the gears are about 1.5mm long and 0.25mm high. every 10° = 36 of them.