Another thing that gives me a hard time, is that I have some ballscrew whip. It.s 20mm dia, and 1500mm long, one fixed and on simple end support. On the y axis, on the last 300-400 mm moving towards the stepper, I get some whip. At 3000 mm per min (118inch per min) it.s quite strong. Reducing the speed to 2200 (86) it is very little. I assume lowering to 2000 (78) will kind of fix it. I would prefer 100 ipm.

I found two ways of fixing that online. One is a spring support at the middle of the screw, that reduces somewhat the whip, the second is a change in design to make the ballscrew stationary, and rotate the nut (A LOT OF WORK TO CONVERT TO THAT).

Has anyone encountered this kind of problems, and what solution did you come up with?

P.S. Regarding the pictures with the cnc machine from post 204, please feel free everyone to post some photos with your cnc routers, especially those which used them for some time, as I.m sure you.ve updated your machine design to solve all or most of the problems. This includes you too, Rob. :) You.ve posted a photo with your beautiful limit switches, but I did not have the honour to see the entire cnc, and as you always seem satisfied with its performance, it is of paramount importance to my existence to see your cnc rounter. :)