Steel framed fixed gantry draw slide build super cheap

[routercnc]

If you have fitted thrust bearings either end and a ball/deep groove bearing in the middle then that will work OK. If you only have the thrust bearings then your coupling (assuming you are using one between shaft and stepper) will not like the radial loads.

The cost of the proper (e.g. BK12/FK12) parts is not too bad (~£22 for angular contact bearing block set at stepper end and floating bearing set at other end):
https://www.aliexpress.com/store/pro...612.0.0.xrHjqj



This price is if bought separately. If bought with the ballscrew and nut as a complete kit I think this would end up much cheaper.