Use Alum to etch them out.
--- machinest80 <machinest80@...> wrote:
--- In 7x12minilathe@..., "Capt Ken
Appleby"
<captkenn@...> wrote:
Hi,
This might sound a bit basic but it has stumped
me! While drilling
on
my lathe, I have broken two 2mm drills in two
separate holes in a
steam engine alluminium casting. They have both
broken off flush so
there is nothing to get hold of and there is not a
lot of space
around them. I have thought of over-drilling the
whole lot out (if I
can) and making a screw-in plug and milling it
flush.
Is the casting a write-off - Or is there another
way?
All help appreciated
Regards
Ken
Hi,
When drilling aluminium a good cutting fluid is a
must, this kind of
metal welds to the drill bit quick.
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