First, I have a multicam and a axyz machine in my shop, so this is not a real "need". I have rebuilt, repaired, bought and sold several machines. I ran across a set of round linear shafts and bearings along with a leadscrew with delrin nut for the z for a very cheap price. My neighbor has a steel rack pretty well stocked and he always told me to take anything I wanted. So with inexpensive rails and free steel, I figured what the heck.
I have a background in welding, mechanics, and electronic's.
I am at the point of having all axis moving smoothly and the Z working with a drill on the shaft. I have a set of nema 34 motors and leadshine drivers. The electrical end is easy for me, so I am leaving that for last.
Cutting size is working out to be 25"x37" with a 7 inch Z stroke.
I am doing this a little odd, because I had no real plan or drawings going into it. Welding and dealing with steel moving was interesting. I did some welding on the opposite sides of parts to pull things back and was selective about where to weld and where not to weld.
I am unshure if I want to buy more lead screws (5 start 1/2" is what I'm looking at), rack and pinion, or ball screws. At this time I have about $300 dollars in this build. My thought was to keep it cheap, but it's solid and smooth. I am looking for thoughts on placement and choices of drive systems.
Ken