Bill,
Coupla other tool-removal techniques I've seen suggested for broken-off
taps.
If the tool is brittle carbon steel, you may be able to shatter it with
a punch then remove the pieces.
Or, TIG-weld an extension onto the broken-off piece.
And getting a bit exotic, if the fastener and body are both NOT steel,
you can use hot alum solution to dissolve the steel tool.
Never tried any of these myself. Some web searching will reveal
instructions from those who have. Good luck!
Henry
On 3/23/2020 5:20 PM, William Claybaugh wrote:
I had a hex drive socket shear off in a fastener today.
The hex sheared at the top of the fastener, of course, so there is nothing to grab; it also appears to be cocked in the fastener and so won’t just fall out.
I’ve tried drilling the broken hex but it’s tool steel....
Bill