Extremely good points raised by grumpy here I must say. I too, don't like the easy out tools, for the same reason. I don't own any! In my time at the Ordnance Factory here in Bendigo, we only used the disintegrating method on expensive items. Another trick I have found that sometimes works too, as long as the threaded hole isn't blind, (goes right through), is to simply use a smaller drill bit than the thread, and try drilling into it. Occasionally the force applied will sometimes break the hold and screw the remaining part through, and out the rear face. But yes, blind holes are tricky, have plenty of patience, be careful, and don't hurry the job.
Oh Yeah, another way of fixing a threaded hole where you've had to drill the old out, and now it's too big, is to drill and tap it even bigger, screw in a bung (usually a bolt) sealed with high strength loctite, then drill and tap that back to the original size. After you've cut / ground / filed the top of the bung level with the original face. Sometimes, doing this is a quicker method!
One of my sayings,
If it's dificult - it takes a while.
If it's impossible - it just takes a bit longer!
Last edited by Greg Holmes; 25/09/11 03:48 AM.
