I'm using Cam Bam, is it possible to reduce the acceleration during the actual milling movements (ei not rapids). As far as I know the acceleration settings in mach 3 only apply to rapids. I tried replacing my drive pulley with one that I thought was higher quality. It made a marginal difference. Reducing the error from ~0.03" to ~0.02 to 0.015". Now I am thinking maybe it is an issue with missing steps? I also tried tightening the crap out of the y belt, did not seem to make a difference, if anything the accuracy decreased slightly.

What sort of accuracy are you guys getting with your Momus machines? I would be happy if I could get consistently ~0.005" but finding the source of this inaccuracy is proving quite illusive.