KenV
Member
The April 2014 issue of the American Woodturner has a Safety Note (page 31 Volume 29 issue 2) by John Lucas.
I suspect that many IAP members do not belong to the American Association of Woodturners and with all the lathe drilling, it is worth repeating.
John was drilling with the tailstock mounted drill chuck with the Morse Taper. As he was backing the bit out of the wood, the taper came out, the bit jammed, and a lot of bad things happened very quickly. The bit ended up bent. Inquiry on ways to avoid a repeat elicited a note from Lyle Jamison that he has a pin through his taistock ram and the taper.
John modified that by drilling a hole in the tailstock ram and tapping it with a 1/4 by 28 tap (7/32 bit provides 80% threads) and installed a grub screw that would sit below the surface of the ram. He milled a flat on the MT insert and can now lock down his drill chuck. Photo from his article is attached.
In the same issue, Tom Coghill of Anchorage Alaska notes that small piece of Teflon pipe tape will keep grub screws from coming loose.
Something to think about to make your drilling more secure ---
Also think about becoming a member of American Association of Woodturners
(I found it interesting that we do not have a safety focus forum when I was looking for where to post this)
I suspect that many IAP members do not belong to the American Association of Woodturners and with all the lathe drilling, it is worth repeating.
John was drilling with the tailstock mounted drill chuck with the Morse Taper. As he was backing the bit out of the wood, the taper came out, the bit jammed, and a lot of bad things happened very quickly. The bit ended up bent. Inquiry on ways to avoid a repeat elicited a note from Lyle Jamison that he has a pin through his taistock ram and the taper.
John modified that by drilling a hole in the tailstock ram and tapping it with a 1/4 by 28 tap (7/32 bit provides 80% threads) and installed a grub screw that would sit below the surface of the ram. He milled a flat on the MT insert and can now lock down his drill chuck. Photo from his article is attached.
In the same issue, Tom Coghill of Anchorage Alaska notes that small piece of Teflon pipe tape will keep grub screws from coming loose.
Something to think about to make your drilling more secure ---
Also think about becoming a member of American Association of Woodturners
(I found it interesting that we do not have a safety focus forum when I was looking for where to post this)