broken tap removal

[generalpetres]

ill try and tap extractor first and if that doesn't work ill probably press off the gas block. tap extractor will be the cheapest, another gas block will cost 38. so ill see what happens hopefully luck will be on my side.

basically its got rodes that slide down between the cutting flutes which should hopefully give enough leverage to twist the tap out with out ruining the threads.

[kcstott]

ill try and tap extractor first and if that doesn't work ill probably press off the gas block. tap extractor will be the cheapest, another gas block will cost 38. so ill see what happens hopefully luck will be on my side.

basically its got rodes that slide down between the cutting flutes which should hopefully give enough leverage to twist the tap out with out ruining the threads.

They never work. We had those in every shop i worked in and never once did they work. Because if the tap was loos enough to remove with a tap extractor if was loose enough to grab with pliers. We either carefully punch it out, Carbide it out, or burn it out with an EDM

[generalpetres]

it might be loose enough to get out with the extractor as i cant get pliers in to the gas block to get a hold of the tap as theres not enough room. for 11 bucks i have to atleast give it a try.

[AragornElessar86]

Try the extractor first, but I usually end up having to shatter mine.

[Josey Wales]

I'd freeze it with liquid nitrogen then hit it with the punch.

Those things are brittle as hell, I would just get a good hardened punch and try to shatter whats left.

[klewan]

You'll like the EDM, I had to remove a broken EZ-OUT from a Lotus Twin Cam cylinder head. Old timer machinist suggested the punch and shatter it. Didn't work. $15 to take out the EZ-OUT and what remained of the exhaust stud. He ran a tap into what was left to remove that. Like brand new.

This was 1971...

[generalpetres]

I'd freeze it with liquid nitrogen then hit it with the punch.

where would i be able to get some liquid nitrogen at?

[Carsgunsandchics]

where would i be able to get some liquid nitrogen at?

If you can't get some easily try and get some Co2, or in a pinch a can of canned air turned upside down.

Regardless of which you use care should be taken to prevent freeze burn.

[generalpetres]

ill try freezing the tap while im waiting for the extractor to come maybe ill get lucky. as far as edm i wouldn't mind doing it but with the price being so high i can get 2 new gas blocks for the price to fix this one. and i already have a 20 ton press so its not truly cost effective.

[77bawls]

They never work. We had those in every shop i worked in and never once did they work. Because if the tap was loos enough to remove with a tap extractor if was loose enough to grab with pliers. We either carefully punch it out, Carbide it out, or burn it out with an EDM

They worked every time I've ever needed one.

[kcstott]

They worked every time I've ever needed one.

Like I said if it was lose enough to come out with an extractor it was lose to come out with needle nose pliers. I've never had any luck with them and consider them a waste of money. But if you've had better luck be my guest.
I've also worked in shops where the EDM was just ten feet away. so the once in a blue moon when we would break a cutting tool in a part we just burnt them out.

[generalpetres]

i talked to my professor in machine shop class and he recommended soaking it in some lithium or moly grease then freeze the tap and try the extractor. so well see. as for needle nose pliars its kinda hard to graps the tap due to the angle the tap broke off at.

[9mmrevolver]

Jetting huh? Never thought about that. What jets are u using and where are you getting them? If u don't mind me asking

[ar15barrels]

Jetting huh? Never thought about that. What jets are u using and where are you getting them? If u don't mind me asking

You make your own jets from set screws.
First, find a place to insert the jets into the gas flow path.
Tap it for the setscrew.
Then take setscrews and drill them with whatever port sizes you want.
Now you can screw them in so the port size adjusts the gas flow.

[generalpetres]

Jetting huh? Never thought about that. What jets are u using and where are you getting them? If u don't mind me asking

http://www.theakforum.net/phpBB3/viewtopic.php?f=37&t=121598&sid=58e9ffea360588e33fe1f5c740f84fe4

you can read about it here