Hey guys
I have started to build a CNC machine and have a few questions.
My machine is made out of Aluminum, and has a working area of around one A3 sheet of paper.
I have linear bearings for the X and Y axis running on 20mm High Tensile Precision Ground Bar. The Z axis is using sintered brass sleeves on 1/2 inch PG bar.
The first couple of questions have to do with the "ball screws".
Is the machine best made with the same pitch threads?
I am not using proper Ball Screws yet but have decided to use precision threaded rod with wide Brass Nuts, Two nuts on each rod with a spring to seperate them. and a housing around the two.
I am hoping this will be suitable to reduce backlash????
Any comments??
Cheers :cheers:
Tabor