Freeing Up A Stuck Nut Or Bolt

[half ton]

I take it the induction loop has to cover the head of the bolt, My son has snapped a bolt off on his pick up back axle (below flush)

Don’t eff about. Get a £700 induction heater. You’ll wonder how you ever managed without. My local garage charges a bottle of wine a throb!

 

[MartytheMartian]

Yep the item to be heated has to be inside the loop and the heat is very localised so I would say your son's problem will need drilling out/specialist treatment. If purchase can be got on the remains of the bolt then a gas torch would be the best option for applying heat to try and free it.

 

[half ton]

Yep the item to be heated has to be inside the loop and the heat is very localised so I would say your son's problem will need drilling out/specialist treatment.

He's tried drilling it and screwing an extractor in....snapped that as well,Got a pilot hole in the easy out now and waiting on some cobalt bits tomorrow , I think he is going to go as large as he can and if it still doesn't shift he will have to get it helicoiled

 

[MartytheMartian]

Tricky job. I have been there myself and I couldn't get a decent hole in the snapped screw extractor ( it was a crankshaft rotor bolt(long story/don't ask)). Spoke to a nearby engineering firm and they said that the only real way to deal with the screw extractor was using electric arc erosion. The crank was out of the engine so I just took it round to them and they got the snapped rotor bolt out in the blink of an eye and it only cost about fifteen quid although that was thirty years ago.

 

[BAD LUCK DUCK]

I've still got that bolt on my front fork that sheared to remove somehow....
I think the fork will have to come off and a press drill be used to drill out the offending bolt..that will be a case of finding a local engineering place and getting them to do it for me..

 

[MartytheMartian]

Way to go if you don't have a drill press or access to one. In my experience trying to drill them out with a hand held drill usually ends in tears as you just don't have the control to accurately drill into the bolt and the drill more often than not ends up wandering off into the soft alloy. The guys who do these things day in and day out can often even get the knackered bolt out without destroying the thread or the can bang in a helicoil thread for you.

 

[BAD LUCK DUCK]

Way to go if you don't have a drill press or access to one. In my experience trying to drill them out with a hand held drill usually ends in tears as you just don't have the control to accurately drill into the bolt and the drill more often than not ends up wandering off into the soft alloy. The guys who do these things day in and day out can often even get the knackered bolt out without destroying the thread or the can bang in a helicoil thread for you.

I've tried with hand drill and exactly what you said is the direction it was going in so stopped before I completely fudged it...

 

[chas]

Tricky job. I have been there myself and I couldn't get a decent hole in the snapped screw extractor ( it was a crankshaft rotor bolt(long story/don't ask)). Spoke to a nearby engineering firm and they said that the only real way to deal with the screw extractor was using electric arc erosion. The crank was out of the engine so I just took it round to them and they got the snapped rotor bolt out in the blink of an eye and it only cost about fifteen quid although that was thirty years ago.

I've always understood those extractors will only be gotten out if snapped by spark erosion and consequently have always avoided them

 

[Tricky Dicky]

My nuts don't usually stick, a bit of talc usually sorts them if they do.....oh! Not the at kind of nut then.