Luthier CNC

[AndyUK]

One question, how do you grease your ballscrews? There is no nipple I can see...

There isn't a nipple on the screw itself. The bits that move are the bearings and the ballnut - the rest just needs a slight surface coating to protect the metal. The bearings are sealed, so its just the ballnut that needs the gun.

I over-greased the ballnut and then ran it up and down the screw to smeer the grease all around. The other way would be to smeer some grease with a finger all the way along, then run the ballnut up and down a few times.