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Post count: 61
#5458 |

Well, you were right. I used it extensively with a lot of Z moves over the past few days, and I notice some backlash now. I would get one of these http://www.robotdigg.com/product/18/Anti-backlash+Nut+for+Tr8*8+Leadscrew for $10, but at 36.5mm diameter (versus 22mm for the nut I have now) it would be way off on lining up with the Z motor mount (and would require a redesign of the Dewalt mount too for more clearance there).

I wonder if I could do what you did for the original design – take the spring, and get a 2nd cheap 22mm nut (they are only about $5 for the non-antibacklash ones) to put on the bottom of the Z nut trap.