Quote Originally Posted by JAZZCNC View Post
Francis is that a cover your putting over the spindle. If so why.? . . . . Covering the whole Z axis is a good idea as it keeps debris out of screws and rails etc but I wouldn't cover spindle as it traps in heat causng cooling/pump to work harder and potential for heat expansion.
Especially true if you forget to switch on the pump or if hardwired like mine, it switches off for some reason and you don't see it. I have made a habit to check temp with hand.
Normal work will not f^^k the spindle, it heats a bit /50-55C/ but that's all. But with that cover...