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EDM can cheese-wire right through blocks of tungsten.

That I readily believe, but to face a sheet is a different matter, which I believe was the application the OP intended.

You can also cut tungsten with water jets loaded with abrasives, I've seen a 2" thick block cut like that, it was quite impressive. But that won't get you a surface. You'd need to start with a sheet of the right thickness.

True. I bet a quick call to Rembar would put you on your way to a source if you just need sheet.

Tungsten foil/sheet isn't that hard to come by.

I've only ever used bar stock, but I imagine the same suppliers would have sheet as well though I can see a couple of arched eyebrows when you order that, plus a question or two if you are absolutely sure they have your order down accurately.

Cost a small fortune too.

Thank you very much!

Rembar and Plansee are consistently good.

Cut it off the end of a bar.

Hehe. Very funny :)

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