mishaps.

[bixxjs]

Hi Y'all
Hope everyone is safe and healthy during this troubled time.Im in the UK and my place of work is shutdown during the Covid 19 virus.
I decided to TRY and drill out a sheared off bolt then use an extractor to remove the broken portion.Youve guessed it the extractor snapped.Orignally I was going to take the entire assembly to work and Spark erode it out,but obviously now that's out the question.
My question is has anyone ever tried to drill out an extractor,it was an Erwin .

 

[matt_i]

Re: Self Isolation mishaps.

I would have the blue wrench on that (oxyacet flame) while using the extractor and especially right now. If you have enough to grab with pliers you might still have a chance.

Otherwise something like a carbide bur or a dremel tool with appropriate cutter may work.

 

[fourbyford]

Re: Self Isolation mishaps.

It appears there's enough sticking out to weld a nut on?? Then, carefully use a wrench to turn out...

...D

 

[bwringer]

Re: Self Isolation mishaps.

Repeat after me:

Extractors never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never work.

Never.



Anyway, what do you have available? No, you can't drill extractors.

 

[JerryC]

Re: Self Isolation mishaps.

Repeat after me:

Extractors never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never work.

Never.



Anyway, what do you have available? No, you can't drill extractors.

I've seen a video where the extractor was shattered by hammering on it with a punch.

 

[CraigStu]

Re: Self Isolation mishaps.

I am w/ bringer. Have been exactly where the op is and have never had a success once the extractor snaps. I use the weld onto it method. You usually have to weld a small bit, let it cool some, weld another small bit, etc. The expansion/contraction cycles loosen things up and usually it is surprisingly easy to back it out of the hole.

 

[bdbecker]

Re: Self Isolation mishaps.

I've seen a video where the extractor was shattered by hammering on it with a punch.

Yep... been down that road. Same thing with broken taps.

 

[WhoWhatNow]

Re: Self Isolation mishaps.

Sounds like you are stuck at home like the rest of us. Good time to build your own EDM:


https://www.instructables.com/id/EDM-Electrical-Discharge-Machining/

 

[brownsmustang]

Re: Self Isolation mishaps.

I have been doing manufacturing maintenance for just shy of 25 years, extractors DO work, but bolt extraction requires a finesse that takes years to learn. By the looks of the bolt it broke off because of corrosion so heat will be required no matter the means of removal. If you can weld a nut on, do so and heat the part it's threaded into. I'd recommend you remove the part and work on it on the bench typically, but by the looks of the corrosion on it and the surrounding parts, you might have more broken hardware if you try.

 

[harley jim]

Re: Self Isolation mishaps.

The only success I have ever had was to heat the extractor to remove some of the temper then grind and chip it out.
Can you get to the top side to try and punch it out after heating it.
I hate when that happens.

Sent from my SM-A102U using Tapatalk

 

[rbgearz]

Re: Self Isolation mishaps.

It appears there's enough sticking out to weld a nut on?? Then, carefully use a wrench to turn out...

...D

This!

 

[firebirdparts]

Re: Self Isolation mishaps.

Repeat after me:

Extractors never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never work.

Never.



Anyway, what do you have available? No, you can't drill extractors.

This is kinda where I live too.

Happily, I must say, as I get older, it seems like everything is getting a lot less rusty. Stuff just comes apart.

 

[Jazz1]

Re: Self Isolation mishaps.

Patiently tap with a small chisel, it should let go and after its made a revolution or two will come out easily....that's been my experience with tap broken in cast iron

 

[Viper98912]

Re: Self Isolation mishaps.

Put two flats on that round end and then use pliers?

 

[metlmunchr]

Re: Self Isolation mishaps.

If all else fails, you can drill the extractor out with a straight flute solid carbide die drill. Not a cheap solution though, as a 1/4" drill is about $35 to $50 depending on brand.

 

[fang123]

Re: Self Isolation mishaps.

Repeat after me:

Extractors never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never work.

Never.



Anyway, what do you have available? No, you can't drill extractors.

Whew! And I thought it was just me!

 

[BFBOB]

Re: Self Isolation mishaps.

Anyway, what do you have available? No, you can't drill extractors.

Yes, you can. Get a carbide masonry bit of a small size (I've seen them down to 1/8" - 3mm. With a silicon carbide grinding wheel, put a sharp edge on it, right up to the vertical face of the carbide insert. It won't drill efficiently, but it will drill.

...but the better way is not to use a screw extractor in the first place.

 

[nadogail]

Re: Self Isolation mishaps.

Sir, you have a problem. Good Luck

 

[garfunkle24]

Re: Self Isolation mishaps.

I would either weld a nut/washer on or grind two flats and try and turn clockwise to release it. Otherwise can be drilled or ground out with carbide or diamond tooling.

I'm also gonna refer you to and plug my old thread regarding extractors: https://www.garagejournal.com/forum/showthread.php?t=62687

 

[PWC Repair]

Re: Self Isolation mishaps.

My FIRST go to is always the wire welder. Weld on a nut, smack it a couple times with a hammer while it's still hot, turn it right out. Works 98% of the time and fster than putzing around with a drill.

 

[DanarchyCustoms]

My first instinct is to always weld a nut to it. Drilling anything *****, extractors don't work, always had success welding a good size nut to it.

 

[cvairwerks]

We use extractors all the time at work for damaged hardware with very few problems. The usual one is guys either drill with the wrong sized bit, or not deep enough. We don't have to deal with rust, but rather with damaged heads on titanium fasteners.

It takes a little care and finesse to use them without breaking them, as well as knowing when to use alternate methods.

 

[bwringer]

It's true that extractors have a few limited uses, but they never (x297) work when a fastener gets stuck from corrosion and breaks.

I've used and extractor, for example, to remove the stub of a bolt that sheared off from vibration and overloading, but the threads weren't corroded and stuck. If the threads are so stuck that the fastener broke from the torque, an extractor isn't going to work.

 

[earthmover1980]

Lets go a bit further here people. What is the part, how critical, expensive, and how difficult to remove is it? I have dealt with some very stubborn broken bolts on parts that were integral to the machine, example : Bulldozer bottom roller attaching bolts, Excavator track frame bolts, and other things that just plain had to be dealt with. Tge last one I broke was a grade 10 3/4 fine thread bolt that held the master track link together on a Big Dresser Bulldozer. The bolt was coming out fine, as I always heat around the female portion to loosen things up. I was nearly out, it was going, but kind of hard. The threads were gauled a bit. Then you guessed it, SNAP!!! So how did remove it you ask? I center punched it as close to the center as I could. Start drilling, and gradually increase drill bit diameters. I then got a dremel with a very thin bit and circled the i.d. if the drilled hole until I just started seeing thread. I then obtained the proper tap, and re tapped the hole successfully. I have been most successful with this type of method, when the weld a nut on trick just wont budge the stubborn *****. The key is to not break bolts off. I always pre heat anything that is even questionable. If you have a simple to replace part like an a arm, just replace it , but sometimes we are just stuck dealing with em.

 

[MushCreek]

Extractors DO work, if you're careful, and know what you're doing. We used to use them on a near-daily basis where I worked. We had better luck with the square ones, and you have to know when you're reaching the safe limit of the tool. For severely corroded fasteners, that includes using penetrant like Kroil, and heat before you go wrenching on it.

Once it's broken, I agree, you're gonna have to machine it out with carbide. A burr is slow, but safe. If you break a carbide drill off in there, you're really screwed.

 

[fsae0607]

Bottom line: if the threads are seized, DO NOT use an extractor. Learned this the hard way!

 

[Jagmandave]

I read an article that said you could burn it out with an oxy acetylene torch, use a very small tip and a slightly carburizing flame and it would leave the surrounding metal unhurt.....makes lots of sparks as it burns out, so beware.....