Help! I have a bench drill which I bought about 3 years ago. It's extremely heavy, being cast iron throughout, and has served me well during that time. However, a couple of weeks ago I had the work table tilted through 12degrees to drill the 1" sockets on the underside of some stool-tops, to take the tenons of the legs. Just as I finished the batch, the chuck dropped out of the drill - which was a bit scary. Problem is, it now keeps happening. It's a 2MT, with the top of the taper ground to what I can only describe as a 'pinched' shape, so it has to be slid into place and rotated until the top locates, then pushed home.....but it now just keeps slipping out.
What can I do to make it stay in place?
Les