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This material has radiation shielding properties far worse than just lead - lead which is cheaper and easier to manufacture

Pure tungsten on the other hand is very good and can even shield beta particles

Yeah but it's lead! Lead isn't a very friendly thing to just have around.

paint it, sheesh

Yeah, but you'll never pass RoHS, try shipping a product that doesn't meet RoHS...

are you saying this filament is nothing more than a meaningless exercise in box-checking bureaucracy

that is depressing

No, im saying lead is bad and you can't put it in products anymore.

Tungsten is ok

lead metal is safer than tungsten to have in your body

don't confuse government power with wisdom; in many ways they are opposites