[TheForge] a blacksmithing question and aceramic/pottery question

[CGRAF]

On 1/6/2012 7:49 PM, Jerry Frost wrote:
> Terry: How about just doing a specific gravity on a piece. It may not give
> you a metallic analysis but it will give you a ballpark. If you actually
> need a correct analysis I'm thinking you need to talk to someone with a mass
> spectrometer and pay the price.
>
> Jer
> ----- Original Message -----
> From: "Andrew Vida"<osan at netlabs.net>
> To: "terry l. ridder"<terrylr at blauedonau.com>; "Blacksmithing List
> Sponsored by ABANA"<theforge at mailman.qth.net>
> Sent: Friday, January 06, 2012 1:55 PM
> Subject: Re: [TheForge] a blacksmithing question and aceramic/pottery
> question
>
>
>>
>>
>> On 1/5/2012 1:49 PM, terry l. ridder wrote:
>>
>>> given the color of the part, we initially thought it was either copper,
>>> brass or bronze alloy. the part is too light to be a copper, brass or
>>> bronze alloy. using an optical microscope, an examination of the break
>>> area leads me to believe that the part is a Beryllium alloy.
>>>
>>> why use a Beryllium alloy to make the part to being with?
>>
>> How about pot metal?  Beryllium is very likely NOT the metal for reasons
>> I will not go into here.
>>
>> If you can get the part into one piece, I would fill and threaded holes
>> just to the limits of the threads, then make an RTV mold, shoot a wax
>> and cast it in red bronze.  If you think there is a critical dimension,
>> spray a couple coats of well-thinned lacquer on to make up for
>> shrinkage.  Run a tap through the threaded areas and you are done.  Fast
>> and relatively painless.  You can have it done in a couple of days,
>> assuming you are sending the piece out to be cast.
>>
>> I would not over complicate the problem.
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>
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