Helocoil removal

[MVWSR]

I need to remove helicoils from 3 blind holes. Ivd tried EzOuts, wedge 2 file tang's with heat.
Google has a small triangle wedge on a T-handle..

 

[MVWSR]

This is a tool mount for work, Im trying to make it dual purpose.
I need to remove so I can tap the beginning 1/2" to a larger thread M12 thread and that damn stainless helicoil is to hard and springy.

 

[MVWSR]

Luckily i had alittle sacrificial aluminum around the helicoil I was able to drill to get a small pick in. Prying it out enough to grap with needlenose visegrips for the WIN!

 

[RaisedByWolves]

Luckily i had alittle sacrificial aluminum around the helicoil I was able to drill to get a small pick in. Prying it out enough to grap with needlenose visegrips for the WIN!

That’s about what I was going to suggest.

I work in tool&die and have removed hundreds. I usually make a pick/chisel and hammer it in near the last wind of the coil and knock it out of kilter, then grab it with a pick or pliers and pull.

Your problem now is that your drill will want to walk towards that gouge you made.

Got a mill?

 

[cmandp]

The wedge shaped removal tool really is the easiest way and least damaging to the surrounding material. You hammer it in 90° to the end of the wire and spin it out.

 

[Monza Harry]

The wedge shaped removal tool really is the easiest way and least damaging to the surrounding material. You hammer it in 90° to the end of the wire and spin it out.

I've used a version of the OP'S method. I just used a pick and needle nose pliers. 1 dozen h-coils in just 1 job ~15 minutes. Now that wedge tool nice! Harry

 

[kerrynzl]

Try a Cordless drill with a reverse twist drill bit

 

[rlitman]

Helicoils come out naturally, but a lot of the suggestions above make the problem worse. An ez-out for example pushes outwards due to its taper, and that will make the helicoil tighter, pushing it deeper into the thread's grooves. A left handed drill bit has nothing to catch on.

You shouldn't need to do all that drilling damage. A fine dental pick will get you started enough to drive something bigger under the exposed tail. Grab that tail with pliers and bend it in, towards the center of the hole. Then just rotate it, and it will release and unscrew, just like the bottom tail of the helicoil works with the insertion tool.