67Views4Replies

Author Options:

Removing Broken M2 Tap from Anodised Aluminium 2014. Answered

Hello Everyone,

As you might have read, I have a Milled Aluminium 2014 Block which is Anodized with Black color, Today when I was tapping the holes of it, the M2 Tap broke and got stuck inside that hole, there is no portion of it outside the hole, so I can't unscrew it and pull it out.
I saw a few videos on youtube on how to use alum water, or electrolysis(with 10% dil H2SO4) to dissolve or chemically remove the Tap bit from the hole, But my question is is it possible that using any of the above options could destroy the anodizing on the job work. and is there any other easy method I can use?

Please Note that the tap bit is M2 and There are no tap extraction tools for a bit that small on the internet (or Locally Available in India) but if you find one Please post links for the same.

Please Be Positive and make this community a happy place. Thanks.

Discussions

0
None
_Boltz_

8 days ago

Hey Everyone, so after scratching my head for a while I decided to get it done by a professional, he is charging 0.2$/mm of height.
We also agreed to get all other taps done at a price of 0.4$ per Tap (the job work has a total of 25 taps).

0
None
Toga_Dan

9 days ago

Several yrs ago, I was faced with a similar problem. I chose to drill and tap another hole in a location that it would work. To some extent, this meant accepting the Aesthetics of an abandoned hole with a broken tap.

If you're really committed to getting that tap out,
https://m.youtube.com/watch?v=IZsjj7pqBXc

0
None
Toga_Dan

9 days ago

Do you have a spare piece of anodized Al which you wouldn't mind messing up as a test?

0
None
iceng

9 days ago

The only way to get the tap out is an acid that does not attack Al.. When I worked for Bill Lear of the steam bus fame, they regularly removed taps from Al blocks with acid.. I do not remember if it was sulfuric acid nor if it was safe on Anodized 2014.