[fahque99]

Would something like this work for a X axis for a plotter/PCB drill/small milling ?

[Khalid]

yes they will work great..but just change the arrangement per foolowing thread
http://www.majosoft.com/engraving/ht...ir_guides.html

[blackbeard52]

Istarted to use this same design on mine but noticed the bottom bearing really allowed too much flexing for the y axis..since it does not capture the round and have any angular contact points like the upper. I eventually used a simular wheel upper and lower except v-bearing style that could be used on angle iron. a much cheaper solution and much more accurate. have a look at Joes 4x4 for an example

Bob