Lathe Chuck Anti-Spin Dog

I have a need to drill some larger diameter holes in pieces set up in the lathe chuck. I use a drill chuck on a taper in the tailstock. Over the years I have spun the chuck on the taper a few times when the drill catches in the work piece. Not a good thing but what is a guy to do?
I had that problem tonight drilling out some 5/8" nuts with a .6195 dia. drill. All the chuck wanted to do was spin. Especially when a little bit of chatter freed it up. I needed to fix this so I could finish a job.
I dug thru one of my scrap aluminum drawers and came up with this... A slip collar from a computer shaft.
http://images55.fotki.com/v268/photo...3/photo-vi.jpg
It fit perfectly over the nose of my drill chuck.
http://images40.fotki.com/v1075/phot.../photo1-vi.jpg
I thought oh man this is doable!
I grabbed another piece of scrap aluminum. 3/16 thick, laid out a pattern off the top of my head and cut it out on the VBS. Smoothed it off with a flap disc and some ScotchBrite and here it is.
http://images57.fotki.com/v139/photo...3/photo-vi.jpg
Drilled and tapped three holes in the collar and dog and bolted them together.
http://images108.fotki.com/v1279/pho.../photo1-vi.jpg
See next post

The dog worked like a charm, I got the nuts drilled out without a hitch (or a spinning chuck) and was pretty pleased with the work I did tonight.
http://images14.fotki.com/v699/photo.../photo3-vi.jpg

http://images55.fotki.com/v585/photo.../photo3-vi.jpg

These were the pieces I was drilling out. Made them a heavy slip fit over the bolt to use as axles for a wagon I am building
http://images57.fotki.com/v256/photo...4/photo-vi.jpg
http://images52.fotki.com/v1566/phot...4/photo-vi.jpg
Mark

Good idea, astroracer! Thanks for posting. :)

Thanks Mark! I've added your Lathe Chuck Anti-Spin Dog to our Lathe Accessories category, as well as to your builder page: astroracer's Homemade Tools. Your receipt:

<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="http://www.homemadetools.net/lathe-chuck-anti-spin-dog"><img src="http://www.homemadetools.net/uploads/120206/lathe-chuck-anti-spin-dog.jpeg" /></a></div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="http://www.homemadetools.net/lathe-chuck-anti-spin-dog">Lathe Chuck Anti-Spin Dog</a> <span> by <a href="/builder/astroracer_2">astroracer</a></span> </div> <div class="tags">tags: <a href="http://www.homemadetools.net/tag/lathe">lathe</a>, <a href="http://www.homemadetools.net/tag/chuck">chuck</a>, <a href="http://www.homemadetools.net/tag/taper">taper</a>, <a href="http://www.homemadetools.net/tag/tailstock">tailstock</a></div> </div> </div> </div>