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Lead soldier casting set (1960s-70s)
(thelemmy.club)
This was a kit sold for children 12 and up, which let them create metal soldiers and other figures. The kit included a crucible, a heating unit, and lead ingots that you would melt in the crucible, to then pour the molten lead into molds.
I assume you could then paint the resulting figures, if you wanted.
Here is a photo showing those components. The crucible and electric heater are on the right. I suppose(?) you would file or trim away the flashing and pour-funnel from the final cast figure, but this photo shows the result straight out of the molds.
Ages 12 and up.
Always thought it would be cool to make a chess set out of a low temperature melting metal alloy so when you take one of your opponents pieces, you could melt it in warm water, and then when you want to play again, you recast all of your pieces.