Experience with Nitric acid for broken screw removal

[dave*99]

A friend of mine has a number of Weber 3 bbl carbs that have broken brass jets and steel mixture screws stuck in the aluminum body.
Over the years I have removed a few of the broken parts for him with the usual methods.

Please tell me your experience using Nitric acid to remove steel and brass screws from aluminum bodies. I am aware of the safety and toxicity issues with Nitric acid. What I want to hear is how successful have folks been with this technique? Any damage to the aluminum? How long does it take?

 

[Mandres]

I just saw a Youtube video about this technique last week. It was posted by the AvE guy - I'll see if I can find a link.

edit: www.youtube.com/watch?v=7pN-fnUeA3o&usg=AFQjCNEpVDXpmhQlIfgo0iWg97yfMgIvvw

 

[white6589]

Linky no worky

 

[rlitman]

Linky no worky

Try this:

What I can't remember was, do you add acid to aluminum, or aluminum to acid? {eyes roll}

 

[Professur]

The k-bec-ois swearing caught me totally off guard.

 

[theoldwizard1]

I have used alum on a broken tap in an aluminum part. It works, but takes a long, LONG, time (days on 1/4" tap).

 

[dave*99]

Interesting video. Quite a character.