this post was submitted on 29 Oct 2024
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Rocket nozzles are commonly made of tungsten, there are more than a few manufacturers in the US. Drill bits can be made of tungsten carbide. Armor piercing weapons use tungsten too. All of these have industries in the US.
Drill bits are coated in tungsten carbide. Sometimes. There are a variety of coatings.
The drill bits you're buying at the big box store are high speed still with some kind of coating to help them last a little longer. The specialty drill bits you're buying for working on metal are also HSS with a different coating and probably different tip geometry.
End mills are milling/lathe inserts can be HSS or carbide, also with some tungsten coating. Importantly, these are sintered, and made out of dust.
Tungsten carbide is waaaay too brittle to work as a drill bit.
Like, no. All sorts of carbide bits, including drill bits.
Lot of tungsten producers and recyclers in the US, kennemetal for instance. They would be happy to come get that cube, might have to crack it into smaller pieces.
https://drillbitsusa.com/product-category/solid-carbide-drill-bits/
You don't use solid carbide drill bits with a hand drill but with mills and cnc machines.
https://www.mcmaster.com/product/3723A51
Spoken like a true tungsten connoisseur.
The company I worked for made tungsten nozzles, they had to be welded using atomic hydrogen welding. One day a bottle of hydrogen shows up and receiving rejected it, we had the supplier label it protium and it went right through.