PDA

View Full Version : Lathe Spindle Thread Protector



Tinkerer
05-18-2008, 11:21 PM
A while ago I built a draw bar for my 10" Atlas lathe and not wanting to always have pry the bushing out of the taper using a screwdriver I made up a thread protector and bushing extractor.

http://img.photobucket.com/albums/v665/A-Tinkerer/drawbarknob.jpg


The bushing fitted had a bit of a gap so I measured it and went about making chips.

http://img.photobucket.com/albums/v665/A-Tinkerer/000_0960.jpg
Fast forward as the camera batteries died... here's the completed unit.

http://img.photobucket.com/albums/v665/A-Tinkerer/000_0963.jpg
If you look at the face you'll see the recess cut in.

http://img.photobucket.com/albums/v665/A-Tinkerer/000_0964.jpg
It has about a 10th of a turn before it engages the back of the bushing and pops it out nicely.

One of these days I'll finally get around to making that tap.

CCWKen
05-18-2008, 11:43 PM
The thread protector is a good idea. Nice work too. I'm not lazy just busy so I just tap MT's out of the headstock with a brass bar from the other end. For collets, I simply unscrew the draw bar about a turn and give it rap.

J Tiers
05-18-2008, 11:56 PM
The thread protector is a good idea. Nice work too. I'm not lazy just busy so I just tap MT's out of the headstock with a brass bar from the other end. For collets, I simply unscrew the draw bar about a turn and give it rap.

I use a brass bar too. But the drawbar thing won't work on the closer, and the brass bar isn't such a good plan for the closer, it tends to distort the back end.