Quote Originally Posted by cncezee View Post
You are allmissing the thread,, ball screws are case hardend,which means the centre is soft.

simplydrillout the centre and insert a steel pin of your desired size, lock it in with anarobic glue.

Works ever time for me,and i have never had one come loose yet
ummmm but thats exactly what JohnS was doing...

Quote Originally Posted by John S View Post
You drill and ream the hole in the end of the screw
His approach was more about how he does it so the extension stays put...