I realize this question may be a little bit hard to answer, but I wanted to look at what is available for building a better printer.Right now I have a machine that uses GT2 cables to move the X carriage and the bed. It uses threaded rod with flex couplers for the Z. This is a fairly common setup.I know that flex couplers in the normal configuration are not as good as they would be with a thrust bearing above them because they are springs being compressed.There are other track systems around that might still use a belt for the actual movement but it glides along a nicer track instead of the metal ball bearings.So given a price point that is not terribly outrageous – what would be the better movement systems we have access to now? http://ift.tt/2e4Zwow