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<p>[QUOTE=&quot;springfld.arsenal, post: 43506, member: 54&quot;]Spelter is mostly zinc.&nbsp; We cannon-shooters use zinc for making cannon balls to shoot since the density is just a little less than that of cast-iron (original cannonballs) but zinc is much easier to melt and cast.&nbsp; Zinc has density of abou 7.2, cast iron about 7.9, only about 10% difference.&nbsp; Most people would have trouble &quot;feeling&quot; the weight difference between cast iron and zinc aka spelter when holding an object.&nbsp; Spelter may often have other metals alloyed with it, in addition to the zinc.[/QUOTE]</p><p><br /></p>

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