"Pete C." wrote in message
.com...

steamer wrote:

--If you can, weld something onto the
end and work it out that way.
Here's a link to a photo of how I did this with
a #10 tap:
http://www.flickr.com/photos/steambo...57624880666386

Good if in heat tolerant material, but unlikely
to work without damaging
the 7075AL part in my case.

7075 is _not_ that heat intolerant! I don't think
it will affect it one iota.
phil k.