Author Topic: I want to cast some aluminum parts.  (Read 1329 times)

Offline Dan/Panther

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I want to cast some aluminum parts.
« on: June 06, 2010, 07:28:54 PM »
I have a magneto for an old WE wall phone, and the armature mounting brackets are broken, and a replacement magneto is just to hard to find.
I want to attempt to cast the parts in aluminum.
I have the ability to make Kiln hardened molds, or just plain Plaster molds. Does anyone know which mold type would be better for making cast aluminum parts. I believe the aluminum melts at like 1100 Fahrenheit. The clay molds will withstand 3000 plus degrees, I'm not sure how much heat a plaster mold would withstand ?
Any advice would be appreciated.
D/P

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Offline JorgeAmely

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Re: I want to cast some aluminum parts.
« Reply #1 on: June 06, 2010, 07:36:13 PM »
D/P:

Were the original parts made of aluminum also? If you are replacing iron with aluminum, it may not work, because aluminum is not a magnetic material. Unless the aluminum you are bringing into the phone does not play a role in the magnetic circuit associated with the operation of the phone.
Jorge

Offline Jim Stettler

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Re: I want to cast some aluminum parts.
« Reply #2 on: June 06, 2010, 08:50:08 PM »
You might want to sand cast instead. Some high school metal shops may still have foundry.
Jim
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Offline Dan/Panther

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Re: I want to cast some aluminum parts.
« Reply #3 on: June 06, 2010, 10:27:24 PM »
The parts were/are originally pot metal.
D/P

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Offline JorgeAmely

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Re: I want to cast some aluminum parts.
« Reply #4 on: June 06, 2010, 10:59:42 PM »
D/P sir, full steam ahead!
Jorge

Offline McHeath

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Re: I want to cast some aluminum parts.
« Reply #5 on: June 06, 2010, 11:58:20 PM »
Wow, casting aluminum.  You have passed my level, the only thing I cast is the occasional fishing line.  

Offline paul-f

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Re: I want to cast some aluminum parts.
« Reply #6 on: June 07, 2010, 02:01:21 AM »
I have a magneto for an old WE wall phone, and the armature mounting brackets are broken, and a replacement magneto is just to hard to find.
<snip>

D/P:  Please post photos of the magneto and/or parts you need.  There's a chance I may have something and a better chance that a post on the ATCA and TCI lists would produce results.  There are a lot of magnetos and parts out there.  Many go unsold at shows.
Visit: paul-f.com         WE 500  Design_Line

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Offline Dan/Panther

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Re: I want to cast some aluminum parts.
« Reply #7 on: June 07, 2010, 03:05:57 PM »
Paul;
Here is the magneto. It's a W.E. 48-A. You can see the crack lines, where it was broken, before I patched it back together in an attempt to make a mold.
D/P

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Offline paul-f

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Re: I want to cast some aluminum parts.
« Reply #8 on: June 07, 2010, 11:59:08 PM »
D/P:  The photo helps.  I believe my parts magnetos are incompatible models.  I'll double check to make sure.  Try the club lists.  There are enoug wood specialists there that someone is likely to have a magneto parts box.
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