So I broke off a M3 tap in a block of 0.5" aluminum.

Its tip is barely emerging on the far side, and broken below
flush on the feed side.


--
A host is a host from coast to
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433

"David Lesher" wrote in message
...

So I broke off a M3 tap in a block of 0.5" aluminum.

Its tip is barely emerging on the far side, and broken below
flush on the feed side.



I feel for you.

Did you manage to wiggle it back out or did you go for the brutal pin punch
solution?

On Sun, 15 Apr 2012 09:23:28 +0000 (UTC), David Lesher
wrote:


So I broke off a M3 tap in a block of 0.5" aluminum.

Its tip is barely emerging on the far side, and broken below
flush on the feed side.

If you got lots o' time, nitric acid will disolve the tap and not hurt
the AL

Karl

On Apr 15, 5:23*am, David Lesher wrote:
So I broke off a M3 tap in a block of 0.5" aluminum.

Its tip is barely emerging on the far side, and broken below
flush on the feed side.

--
A host is a host from coast to
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433



I've read in several places that alum works wonders for disolvin taps
in non-ferrous metals. Haven't tried it yet, but here's some reading:
http://www.homemodelenginemachinist....hp?topic=270.0

On Apr 15, 10:37*am, rangerssuck wrote:


I've read in several places that alum works wonders for disolvin taps
in non-ferrous metals. Haven't tried it yet, but here's some reading:http://www.homemodelenginemachinist....hp?topic=270.0

I have read that aluminum sulphate also works. You can get the
aluminum sulphate at garden centers. It is used to make soil more
acid.

Dan

On Sun, 15 Apr 2012 10:58:13 -0700 (PDT), wrote:

On Apr 15, 10:37*am, rangerssuck wrote:


I've read in several places that alum works wonders for disolvin taps
in non-ferrous metals. Haven't tried it yet, but here's some reading:http://www.homemodelenginemachinist....hp?topic=270.0

I have read that aluminum sulphate also works. You can get the
aluminum sulphate at garden centers. It is used to make soil more
acid.

Dan

I've used it. A cold solution didn't seem to do anything. Even when
kept near boiling it's still a slow process (hours); but it got the job
done without damaging the part I was working on.

Bill
--
Email address is a Spam trap.

On 4/15/2012 5:23 AM, David Lesher wrote:
So I broke off a M3 tap in a block of 0.5" aluminum.

Its tip is barely emerging on the far side, and broken below
flush on the feed side.



I've often had luck by grinding a O-1 drill rod of the right diameter to
fit into the flutes of a 2,3 or four flute tap. Harden the rod and draw
it back to dark straw. Then, carefully unscrew the tap.

Oh, man, that is tragic. That's a real miserable moment.

Christopher A. Young
Learn more about Jesus
www.lds.org
..

"David Lesher" wrote in message
...

So I broke off a M3 tap in a block of 0.5" aluminum.

Its tip is barely emerging on the far side, and broken below
flush on the feed side.


--
A host is a host from coast to
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433