Quote Originally Posted by Davek0974 View Post
Vee rails with R&P drive - seems to be pretty common, reasonably easy to build, precision depends on rail mounting, backlash in rack, adjustment of rollers
Linear rails with R&P - very accurate transport, precision depends on backlash again
Linear rails with ballscrews - highest precision, highest cost, hardest build
Flat plate & skates with R&P - a very common method, precision depends on quality of plate used and how its mounted, easy to replace, lowest cost, needs to be kept clean from grit etc
What is backlash?
And when you say highest cost re ballscrews how much are we talking??