My z axis weighs at least 10 lbs. I used a 1/2"-10 acme rod, a delrin nut and a spring. The spring overcomes all the weight of the axis for most of the travel, a little less than the weight of the axis when its all the way up.
How are you cutting the 1/2" threads in the nut? Do you have a 1/2-10 acme tap? I made my own tap from a bit of the acme rod after I found out how much the acme tap costs...
Eric
__________________
I wish it wouldn't crash. |