Broken tap removal

[richard2717]

Anybody got a trick to removing a broken 3/8 tap from a hole? Buddy was cleaning up threads in engine block and somehow snapped the tap off.

[richard2717]

I never knew these existed till now


https://www.amazon.com/Screw-Extract..._source=1&th=1

[dmjlambert]

I'll have to bookmark that, it looks fantastic. It would be most difficult to drill a tap for an easy out. But those look like just the right thing. Let us know how it works out.

[Boog]

Dang, I could have used that in 1974.

[Getter-Done]

If that set works, you will be money ahead.

Here is the set like that I am used to.

Link: https://www.amazon.com/Walton-Tools-.../dp/B0006NGGCM

You can also make a chisel out of an old tap with a Cupped shape on the inside.

I can send a Picture if you're interested in that idea.

Carbide is the best thing for get HSS taps out.
But carbide prefers a Ridgid setup or it with chip and break.

Dremel tool with carbide Deburring tool works also especially if it cannot be setup in a milling machine.

[TKCR]

Originally Posted by Getter-Done

If that set works, you will be money ahead.

Here is the set like that I am used to.

Link: https://www.amazon.com/Walton-Tools-.../dp/B0006NGGCM

You can also make a chisel out of an old tap with a Cupped shape on the inside.

I can send a Picture if you're interested in that idea.

Carbide is the best thing for get HSS taps out.
But carbide prefers a Ridgid setup or it with chip and break.

Dremel tool with carbide Deburring tool works also especially if it cannot be setup in a milling machine.

That’s the kind I’m used to using also. When I worked in the repair dept at the Honda Manufacturing plant, we got broken bolts and broken taps all the time. And these are what we used.

[mongocanfly]

If that doesn't work it may need to go to a machine shop and be edm removed...

[Getter-Done]

This is so Ironic to me.

Just this Last Friday I had a Critical job,

This stuff needs to be Approached with Kitten gloves (Most of the Time).

Thursday evening, I got a call from my (Direct boss) manager.

We worked together to get this fixed.

I put a Keen Sert in a hydraulic Block that has

No replacement part #
This was for a Major Car manufacturing Facility.

It was for a 5/8 x11 and was taped to 7/8 x 14 for the keen sert.

[pjmoreland]

I've removed broken off exhaust manifold bolts by welding a nut to them. Maybe this technique would work with a broken tap.

[richard2717]

I am not sure what he used but he did text me a picture saying he was able to get it out. I will ask him when I see him next what he did.

[67C10Step]

Originally Posted by pjmoreland

I've removed broken off exhaust manifold bolts by welding a nut to them. Maybe this technique would work with a broken tap.

A broken tap would certainly test someone's religion. That and a broken drill in a hole are not the things you want in the middle of an activity.

The old nut welding trick has saved many a person, including myself. Back when I was just trying to get mine running this was the result of trying to change out the thermostat.

[mongocanfly]

The weld-a-nut trick works good on bolts...not so much on taps and driĺls..their hardness makes them crystallize if you weld on the hardened parts

[richard2717]

So I talked with him again and he used some gun oil squirted in then used a punch to tap it out. He said it worked pretty good like the oil was helping float it out