Quote Originally Posted by maxbest View Post
Hi Jim,

Thanks for your reply. I really like the idea about using a split half-nut however the lead screws that I was going to be using would of been mounted vertically and so as soon as the split nuts disengage from the lead screw they would probably just fall down. Is there any way to overcome this???

A separate mechanical brake or ratcheting stop system would make sense. Without knowing a lot more about the proposed system it would be hard to get more specific.