Erik Johanson
01-13-2012, 2:14 PM
I recently bought a forstner bit extension for drilling out the center of a grinder mill. Everything was going along just fine and then bam, the bit will no longer allow me to feed it into the material. I attempt to extract the bit to investigate my problem and I quickly found the issue. The set screws on the dang extension must have vibrated loose and came undone from my forstner bit. After about two hours of trying to get my bit out of the blank I thought OK, maybe I didn't tighten it down enough. So, I cranked those babies down as hard as I could and this time decided to mount it in the drill press instead of doing it on the lathe.
Nope no luck, except this time the set screws didn't loosen up they fell out and got chewed up by my forstner bit. So while I am shopping for new set screw to make my $15 POS work, I was wondering if anyone else has had this issue or am I just tool dumb?
I was thinking of putting some loctite on the threads but wasn't sure if that will help? Would grinding a flat spot on my forstner bit help too? (I am reluctant to try this only because of the cost of those little buggers and I would hate to ruin one)
Any help would be greatly appreciated.
Nope no luck, except this time the set screws didn't loosen up they fell out and got chewed up by my forstner bit. So while I am shopping for new set screw to make my $15 POS work, I was wondering if anyone else has had this issue or am I just tool dumb?
I was thinking of putting some loctite on the threads but wasn't sure if that will help? Would grinding a flat spot on my forstner bit help too? (I am reluctant to try this only because of the cost of those little buggers and I would hate to ruin one)
Any help would be greatly appreciated.