Do it yourself CNC machines can be never ending projects ... precautions when welding galvanized material. Standard threaded rod was used as lead screws, with some very well made anti backlash ...
[FreeRider] had built a CNC router before but it was big ... Skate bearings support 5/16″ threaded rod used as lead screws. Lead nuts are tapped HDPE blocks and seem to be doing a satisfactory ...
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