Jimmy S Posted May 6, 2019 Share Posted May 6, 2019 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. 2 Link to comment Share on other sites More sharing options...
8E45E Posted May 6, 2019 Share Posted May 6, 2019 Now in the 21st Century, you can 3-D print that!! Craig 1 Link to comment Share on other sites More sharing options...
Jimmy S Posted May 6, 2019 Author Share Posted May 6, 2019 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.... 1 Link to comment Share on other sites More sharing options...
C Carl Posted May 6, 2019 Share Posted May 6, 2019 (edited) 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) 1 Link to comment Share on other sites More sharing options...
Bhigdog Posted May 6, 2019 Share Posted May 6, 2019 Lots of low temp casting alloys. Most have a large percentage of bismuth. Let your fingers do the walking through Google.........Bob 1 Link to comment Share on other sites More sharing options...
bryankazmer Posted May 6, 2019 Share Posted May 6, 2019 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. Link to comment Share on other sites More sharing options...
PFitz Posted May 6, 2019 Share Posted May 6, 2019 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 Link to comment Share on other sites More sharing options...
viv w Posted May 8, 2019 Share Posted May 8, 2019 Hi Jimmy, The handle is for the light switch or choke lever on 1926/7 Chrysler G70 Viv. Link to comment Share on other sites More sharing options...
Potmetalman Posted May 13, 2019 Share Posted May 13, 2019 (edited) 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) Link to comment Share on other sites More sharing options...
Potmetalman Posted May 13, 2019 Share Posted May 13, 2019 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 Link to comment Share on other sites More sharing options...
Curti Posted May 13, 2019 Share Posted May 13, 2019 Is anyone familiar with Koralloy? A form of potmetal that comes from Korea. Link to comment Share on other sites More sharing options...
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