broken stud and acid solution
 

I am working on an aluminum case with a broken head stud. I have drilled the stud all the way through almost out to the threads but do not want to do any further than that. I was told that there is an acid solution that you can pour into the hole and it will eat away the steel while leaving the aluminum untouched. Can someone tell me where to get this stuff>

I dont know if I would put any sort of acid in there.

Try a left hand drill bit and you will probably spin the remains of the stud right out....

Nah, the left hand drill bit is not going to help. I snapped the stud with a stud socket. With all that torque and the stud snapped instead of moved, then the left hand drill will just do nothing. Any other suggestions?

Studs are held in with RED Loctite. The kind that will not let go without heat. SIGNIFICANT heat. Propane is laughable. If I were mine, I might use oxy-acetylene for about a minute, and then try a reverse bit or quality easy-out. Or perhaps use a tap.

When you have heated the studs to the proper temperature the stud or whats left of the stud will turn freely do not force it or you will be installing time serts(SHH! don't tell wayne)

Ben