|
|
Joined: May 2019
Posts: 115
Campfire Member
|
OP
Campfire Member
Joined: May 2019
Posts: 115 |
Broke bolt off in water pump housing, My bits won't even start to cut. What are the best bits to cut hard steel? Short bits would make a big difference. laying on floor working on back of engine, not fun. Thanks
|
|
|
|
|
Joined: Sep 2011
Posts: 61,012 Likes: 18
Campfire Kahuna
|
Campfire Kahuna
Joined: Sep 2011
Posts: 61,012 Likes: 18 |
Can't help on the drill bit question, but wear safety glasses to keep those sharp pieces of steel out of your eyes.
These premises insured by a Sheltie in Training ,--- and Cooey.o
"May the Good Lord take a likin' to you"
|
|
|
|
|
Joined: Dec 2002
Posts: 15,864
Campfire Ranger
|
|
Campfire Ranger
Joined: Dec 2002
Posts: 15,864 |
Broke bolt off in water pump housing, My bits won't even start to cut. What are the best bits to cut hard steel? Short bits would make a big difference. laying on floor working on back of engine, not fun. Thanks M42 cobalt drill bits.
|
|
|
|
|
Joined: Oct 2004
Posts: 16,916
Campfire Ranger
|
|
Campfire Ranger
Joined: Oct 2004
Posts: 16,916 |
Water pump on the back of your engine ?
|
|
|
|
|
Joined: Dec 2005
Posts: 214
Campfire Member
|
|
Campfire Member
Joined: Dec 2005
Posts: 214 |
Titanium-nitride (TiN) coated cobalt drill bits or
Titanium-aluminum-nitride (TiAlN) coated cobalt drill bits.
McMaster-Carr has them....
Experience hath shewn, that even under the best forms of government those entrusted with power have, in time, and by slow operations, perverted it into tyranny.
Thomas Jefferson
|
|
|
|
|
Joined: Nov 2006
Posts: 10,813
Campfire Outfitter
|
|
Campfire Outfitter
Joined: Nov 2006
Posts: 10,813 |
There are a few things to look at here. If you’re fortunate, the screw is broken off far enough down that the length of the hole from the top surface to the screw will provide lateral constraint to the drill when it starts drilling. You’re right, short drills will be better. The cobalt drills mentioned above will be probably your best bet. Icing on the cake is if you can get a left hand drill which may grab and back the broken fastener out. I would give it a shot of Kroil first to help the chances of that happening. There are kits with the proper drills and extractors for doing this work. There’s not much else I could advise without actually seeing the specific situation up close and personal.
Mathew 22: 37-39
|
|
|
|
|
Joined: Dec 2002
Posts: 15,864
Campfire Ranger
|
|
Campfire Ranger
Joined: Dec 2002
Posts: 15,864 |
Titanium-nitride (TiN) coated cobalt drill bits or
Titanium-aluminum-nitride (TiAlN) coated cobalt drill bits.
McMaster-Carr has them.... +1 Mechanic's length...
|
|
|
|
|
Joined: Feb 2001
Posts: 5,220
Campfire Tracker
|
|
Campfire Tracker
Joined: Feb 2001
Posts: 5,220 |
Solid carbide drill would be my choice, they're brittle though.
The difference between genius and stupidity is that genius has its limits. Albert Einstein
|
|
|
|
|
Joined: Sep 2017
Posts: 2,795
Campfire Regular
|
|
Campfire Regular
Joined: Sep 2017
Posts: 2,795 |
Hedge your bet. Use some Kroil on it. I've had bolts that backed out with a reverse cut drill in the middle of the Hail Mary.
|
|
|
|
|
Joined: Dec 2019
Posts: 17,270 Likes: 17
Campfire Ranger
|
|
Campfire Ranger
Joined: Dec 2019
Posts: 17,270 Likes: 17 |
-OMotS
"If memory serves fails me..."
Quote: ( unnamed) "been prtty deep in the cooler todaay "
Television and radio are most effective when people question little and think even less.
|
|
|
|
|
Joined: Apr 2019
Posts: 422
Campfire Member
|
|
Campfire Member
Joined: Apr 2019
Posts: 422 |
Try this method. The heat and thread protection is a winner. https://youtu.be/-8N0y0jVAng
|
|
|
|
|
Joined: Dec 2002
Posts: 15,864
Campfire Ranger
|
|
Campfire Ranger
Joined: Dec 2002
Posts: 15,864 |
Solid carbide drill would be my choice, they're brittle though. Mulewrights would come up to the machine shop asking me for carbide drill bits to drill out broken screws. I'd tell them that if they broke the drill off in a part I'd smack them in the nuts with a lead hammer. They'd skip the carbide drills...
|
|
|
|
|
Joined: May 2019
Posts: 115
Campfire Member
|
|
OP
Campfire Member
Joined: May 2019
Posts: 115 |
Ordered some short length cobalt bits from McMaster. Will keep you guys posted to how they work. It's on a 05 Grand Caravan with a 3.8 liter. Steel bolt in a aluminum housing. After owning a shop for 31 years, laying on the floor all contorted and with no patience and [bleep] drill bits sucks.
|
|
|
|
|
Joined: Jan 2013
Posts: 8,265 Likes: 3
Campfire Outfitter
|
|
Campfire Outfitter
Joined: Jan 2013
Posts: 8,265 Likes: 3 |
Great video and tips, thanks for that.
|
|
|
|
|
Joined: Sep 2008
Posts: 15,575 Likes: 5
Campfire Ranger
|
|
Campfire Ranger
Joined: Sep 2008
Posts: 15,575 Likes: 5 |
There are a few things to look at here. If you’re fortunate, the screw is broken off far enough down that the length of the hole from the top surface to the screw will provide lateral constraint to the drill when it starts drilling. You’re right, short drills will be better. The cobalt drills mentioned above will be probably your best bet. Icing on the cake is if you can get a left hand drill which may grab and back the broken fastener out. I would give it a shot of Kroil first to help the chances of that happening. There are kits with the proper drills and extractors for doing this work. There’s not much else I could advise without actually seeing the specific situation up close and personal. This is good.
NRA Member - Life, Benefactor, Patron
|
|
|
|
|
Joined: Aug 2011
Posts: 8,793
Campfire Outfitter
|
|
Campfire Outfitter
Joined: Aug 2011
Posts: 8,793 |
l told my pap and mam I was going to be a mountain man; acted like they was gut-shot. Make your life go here. Here's where the peoples is. Mother Gue, I says, the Rocky Mountains is the marrow of the world, and by God, I was right.
- Del Gue
|
|
|
|
|
Joined: Aug 2009
Posts: 104
Campfire Member
|
|
Campfire Member
Joined: Aug 2009
Posts: 104 |
Weld nut over hole/broke off bolt. Wont weld to aluminum so bolt will weld to nut. Let cool. Turn nut... hope for hest
|
|
|
|
|
Joined: Jul 2011
Posts: 11,059
Campfire Outfitter
|
|
Campfire Outfitter
Joined: Jul 2011
Posts: 11,059 |
Great video and tips, thanks for that. This. Good procedure.
"There's more to optics than meets the eye."--anon
"...most of us would be better off losing half a pound around the waist than half a pound on our rifle."--dhg
|
|
|
|
|
Joined: Jan 2002
Posts: 1,705 Likes: 1
Campfire Regular
|
|
Campfire Regular
Joined: Jan 2002
Posts: 1,705 Likes: 1 |
Start with a small drill and do everything possible to drill in the center of the broken bolt!
|
|
|
|
|
Joined: Jan 2019
Posts: 36
Campfire Greenhorn
|
|
Campfire Greenhorn
Joined: Jan 2019
Posts: 36 |
The torque is on the head of the bolt. I've found most times if a bolt breaks, left hand drill bits will bring the threaded end out.
|
|
|
|
|
356 members (160user, 163bc, 10gaugemag, 1lessdog, 12344mag, 1badf350, 34 invisible),
1,921
guests, and
1,012
robots. |
|
Key:
Admin,
Global Mod,
Mod
|
|
|
Forums81
Topics1,192,980
Posts18,499,637
Members73,984
| |
Most Online11,491
Jul 7th, 2023
|
|
|
|
