Hey Everyone, I want to build a Laser cutter for myself from scratch (sort of). I need some way of turning the rotational energy of the servo into a linear movement. I want something fairly cheap, so nothing to pricey. I thought of the classic Lego style thing, with a gear on the servo, with a 'flat' gear: I couldn't find anything like this though - is there a specific name for them? Or is there a more efficient and easier way of doing this job? Thanks!