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Ahwahnee
Samba Member
Joined: June 05, 2010
Posts: 9808
Location: Mt Lemmon, AZ
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 Posted: Fri Jun 27, 2014 3:39 pm Post subject: Removing broken bolt from aluminum - a new twist |
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New to me anyway -- I had never heard of the technique described here:
Dissolving the steel bolt
Of course, it has to be a part you can submerse, but nonetheless an interesting process. |
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sanchius 
Samba Member
Joined: May 03, 2007
Posts: 1452
Location: IN
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goffoz
Samba Member
Joined: May 09, 2007
Posts: 1486
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| Posted: Fri Jun 27, 2014 8:22 pm Post subject: Re: Removing broken bolt from aluminum - a new twist |
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| Ahwahnee wrote: |
New to me anyway -- I had never heard of the technique described here:
Dissolving the steel bolt
Of course, it has to be a part you can submerse, but nonetheless an interesting process. |
Yep this is really old school stuff...i'm really old  in a old school proffession
but have been doing this for years, in machining you often break a drill bit in a deep hole ,if you can't submerge the part, you dam it with putty/clay, and fill the hole with alum solution and use a mini immersion heater to keep it hot...in reality it takes a couple of hours to rot it out.
...usually an overnight thing
The quick method is to carefully apply drops of concentrated nitric acid.
stuffs hard to get nowadays |
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rubbachicken
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Joined: October 05, 2004
Posts: 3058
Location: socal
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| Posted: Sat Jun 28, 2014 2:33 am Post subject: |
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i'm liking this, very useful to know
revitalizing older forgotten ways, doing things old school is the way IMHO
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pushkick
Samba Member
Joined: August 09, 2007
Posts: 1366
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| Posted: Sat Jun 28, 2014 10:14 am Post subject: broken bolts |
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never thought about using acid. but you could take to a local machinist and he could edm, waterjet, or mill out the bolt or broken easyout.
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