Interesting.

I have an assortment of items for the purpose (cuts of railroad rail, granite
slabs, and so on), but I have avoided lead, not out of any particular aversion,
but by not chancing on to sufficient properly priced stock (ie: free).

But now I have an idea.

I have several gallon tins (US gallon, about 4 litres, Jeff) mostly full of used
tooling, mostly tungsten carbide and welding tungsten stubs. All nominally
recyclable, but the 30-plus year savings I have never made it that far, being
more trouble than the return would be for a small quantity. I keep thinking that
some day, I'll have enough to make it worth while.

The density of tungsten is nearly twice lead, and the tungsten carbide about
1-1/2 lead.

If I fill a small bread pan with this material, some lead, and heat the mess to
350C, the result will be a good bit heavier than the equivalent lead volume.

Hmm.


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