I just won my x-axis rails on eBay, so I thought it was about time that I start a thread on my router project. I listed the cost of everything I currently have in my signature line, as I acquire more parts ill up date the list, as well as post more pictures in my zone gallery.
My goal is to have a machine that is capable of 3d wood work and the occasional 3d aluminum work and maintain an accuracy of .01. Here is a sample of the occasional 3d aluminum work I want to do. Its a mold used in the casting of lead model yacht ballast.
I believe the gentleman from Finland that milled this particular mold is a member of this forum.
My next major purchase will be ball screws and nuts, though I think I might need to consider some bigger rails for my z-axis. At the moment Im leaning towards the 5/8 stuff from McMaster-Carr, like wjbzone did on his machine, they seem to be the best deal around for quality ball screws. Any one found a better deal than this?
So for my first question:
Is it possible to use software to compensate for inaccuracies in the ball screw? For example 5/8 stuff from McMaster is quoted as having an accuracy of .004/ft. So theoretically can I change the tpi setting in the software so the accuracy becomes .000/ft? I have seen several places on the forum where it was alluded to but never actually stated.