Thread: FUBAR - again - How to drill carbide?

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Originally Posted by pat mccarthy

to get a e-z out s that is broke off i use a carbide ball mill in my mill or hand drill use the biggest size balll mill you can i have done this many time and works the best for me for studs e-z out s any time i use a easy out go to the biggest size you can i go to all most the root size of the thread size of what is broke off and i drill pass the stud or bolt and put some penetrate oil or hot bees waxs to help loosen the stud or bolt before i try the e z out

Pat I can see you doing this for customers that bring thier louse ups in for you to fix. I dont think you could be that ham fisted to break that many easy outs over a career of engine building.

Depends where the easy out breaks, If you are lucky and the shank shatters above the bolt like happened to me. I got a nut put it over the easy out shank and mig welded the center of the nut to the shank, while everything was still hot I squirted some oil down onto the threads.... Let it cool down but not stone cold, wound it back and forth a bit and just slowly backed it out, going backwards and forwards. Bit of a jaw clencher, but I got there in the end. Finished off by tapping to clean up the threads.