this post was submitted on 29 Oct 2024
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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.
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
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.