Replace those bad pot metal parts...

[Jimmy S]

In the 60’s my grandpa played with low melting point alloys and “RTV” rubber.  He used to make a lot of his own parts,  here’s a light switch handle he made for (I believe) an early Dodge. 

[8E45E]

Now in the 21st Century, you can 3-D print that!!

 

Craig

[Jimmy S]

21 minutes ago, 8E45E said:

Now in the 21st Century, you can 3-D print that!!

 

Craig

 

Probably!!! I wish I would have written down the name of the alloy, I have about 5#’s of it, just in case....

[C Carl]

Hi Jimmy S ! You can take a sample of the alloy to your regional assay office and have it drilled in several places and analyzed for content. If you'd like to do it ; not expensive, that's what they do.   -   Carl 

 

P.S.  Hmmmm........... My feeble old mind just realized that content analysis is the part which is inexpensive. Exact percentage is another matter. I guess I shouldn't be too critical of what is left of my memory : kind of surprised 

that critical detail popped up at all. Anyway, if you need to know, they can do it.    -     CC 

 

Edited May 6, 2019 by C Carl
Add P.S. (see edit history)

[Bhigdog]

Lots of low temp casting alloys. Most have a large percentage of bismuth. Let your fingers do the walking through Google.........Bob

[bryankazmer]

there are techniques now for quantitative (XMet, XRF) metal analysis by pulling an analyzer gun trigger.  trick is to find one that is available to you. 

[PFitz]

I've used some Cerrometal that was given to me by a Brother In Law that was a metallurgist.  http://csalloys.com/cerro-alloys-casting-at-home.html

 

Made a copy of a British BARC badge for my Austin when Walt G was having his original restored.

 

Interesting stuff to work with. You melt it in boiling water and use RTV, or two -part hobby casting rubber molds, or plaster of Paris, as I did because I had that on hand.

 

Paul

[viv w]

Hi Jimmy,

The handle is for the light switch or choke lever on 1926/7 Chrysler G70

Viv.

[Potmetalman]

On 5/6/2019 at 6:15 AM, Jimmy S said:

In the 60’s my grandpa played with low melting point alloys and “RTV” rubber.  He used to make a lot of his own parts,  here’s a light switch handle he made for (I believe) an early Dodge. 

 

Very Nice casting. Nice casting indeed! RTV works great for low temp metals such as bismyth (180 I believe), but not so good for zamac (pot metal). It melts at 730... Plaster of Peris works and captures detail like no other!!

 

Edited May 13, 2019 by Potmetalwelder (see edit history)

[Potmetalman]

On 5/6/2019 at 6:40 AM, Jimmy S said:

 

Probably!!! I wish I would have written down the name of the alloy, I have about 5#’s of it, just in case....

 

I occasionally will do casting using zamac (pot metal). It has a fairly low melting point and it forms good. The trick is using a mold material that will hold fine detail the can also be preheated to brake the molting metal surface tention.

 

James

[Curti]

Is anyone familiar with Koralloy?  A form of potmetal that comes from Korea.