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Rubber molds can be used. A lot of model Rail Road accessories are cast from Bismuth.

I didn't know that, has that been around a long time?

I had a friend casting Model Rail Road stuff in the 1970s. :)

that sounds right but for some reason I thought that stuff was around in the 40s?

Could have been 1940s, that was just when I ran across it. :)

smithlabs! you ran across it in the 40's? dang how old are you?

No in the 1970s is when I ran into them. It could have been common 30 Years before in the 1940s. 😄😅😆😃

lol I know, I was just teasing, I know you can't be older than me.

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