Head stud removal

[Robert Leigh]

When you get to having to drill out the broken bit, dropping the head back on to use as a drill guide can be useful. Start with a bit which is close to the stud hole size, using it only to create a centre in the end of the broken stud for the subsequent use of smaller bits until you get out to the size of the inside of the thread. The remains can usually be picked out with a small bent scriber before cleaning properly with a tap.