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Shrink fit broken tool removal?
- Thread starter Lock
- Start date
- Replies 30
- Views 6,380
Theoretically, but its screaming hot while you are trying to do that. Sorta tried that method but didnt get anywhere...
I used a similar method to this
gregormarwick
Diamond
- Joined
- Feb 7, 2007
- Location
- Aberdeen, UK
If it's broken off cleanly it will fall out if you heat it upside down.
If it doesn't come out freely then it's probably scarred up the bore of the holder where it broke, in which case the holder is probably ruined anyway.
If it doesn't come out freely then it's probably scarred up the bore of the holder where it broke, in which case the holder is probably ruined anyway.
Milland
Diamond
- Joined
- Jul 6, 2006
- Location
- Hillsboro, New Hampshire
Nothing like an explosive grease fire to shoot your hot carbide shank across the shop...
Seriously, don't do this. Manual force only, I'd try the rod and hot holder first. But make sure you have a plan for where the shank will fall, and especially make sure it's not your hands unless you're wearing welding gloves.
TeachMePlease
Diamond
- Joined
- Feb 11, 2014
- Location
- FL
G00 Proto
Hot Rolled
- Joined
- Feb 18, 2013
- Location
- Dirkdirkistan, ID
I was going to suggest removing the pull stud and filling with black powder. Re-install pull stud and then heat. I guarantee the broken tool will come out...
Cole2534
Diamond
- Joined
- Sep 10, 2010
- Location
- Oklahoma City, OK
I was going to suggest removing the pull stud and filling with black powder. Re-install pull stud and then heat. I guarantee the broken tool will come out...
Varget is black, think it would work? lol
G00 Proto
Hot Rolled
- Joined
- Feb 18, 2013
- Location
- Dirkdirkistan, ID
If you can find Varget, H1000, or H4835 I'll trade straight across for toilet paper... no questions asked.
D.D.Machine
Stainless
- Joined
- Dec 10, 2003
- Location
- poulsbo, wa, usa
I was going to suggest removing the pull stud and filling with black powder. Re-install pull stud and then heat. I guarantee the broken tool will come out...
So is a 40 taper and 50 taper the same as 40 and 50 caliber ???????????
Yeah, I'd opt for the manual method first. Heating the holder then injecting grease is definitely not the best idea.
Refer to post #20 on this thread broken tool stuck in heat shrink holder
Scruffy887
Titanium
- Joined
- Dec 17, 2012
- Location
- Se Ma USA
Black powder would be more fun. Black powder IS rocket science.
G00 Proto
Hot Rolled
- Joined
- Feb 18, 2013
- Location
- Dirkdirkistan, ID
One more bad idea... heat it up and push it back down into the tool holder. I had a junior machinist that did that with broken off carbide endmills. I couldn't figure out why I was getting a bad surface finish with a 3/16" ball endmill after he swapped out a broken tool for a new one. Surfacing an injection mold at 12,000 RPM. Turns out he had a couple of broken off endmill shanks that he pushed through the collet and left in the toolholder because it was "more accurate" than taking the collet out of the collet nut. He went on to a different career with Home Depot selling toilets if I recall correctly.
Scruffy887
Titanium
- Joined
- Dec 17, 2012
- Location
- Se Ma USA
Check the holder for bell mouth when you get it cleared.
Orange Vise
Titanium
- Joined
- Feb 10, 2012
- Location
- California
If this is a CAT40 holder, a short piece of rod can be driven from the back with a 5/8"-11 screw.
Don't burn yourself. Assume every piece inside the holder is piping hot, and take your time. It might require several heating cycles.
Don't burn yourself. Assume every piece inside the holder is piping hot, and take your time. It might require several heating cycles.
Eric you could build and market a 5/8-11 collar with a threaded hole in the middle, then use screw pressure and fewer hands.
OR an adapter for the end of a .45 into the back of the Holder. Literally just use the bullet, and shoot it out. Quit messing around with black powder. Easy fix.
R
OR an adapter for the end of a .45 into the back of the Holder. Literally just use the bullet, and shoot it out. Quit messing around with black powder. Easy fix.
R
