I've already got a gear that has its teets as in the picture: I want to create the mechanism from the picture, but it's harder than I expected. I think my gear is not the problem. But I'm not able to create the gray part, the gear anchor. Is there any way to calculate the shape and/or sizes that matter for the anchor? I tried a lot of things but I can't find the ideal shape for the anchor points that hook between the teeths of the gear.