Bimetal vs Carbon Steel: Insights From China Leading Bimetal Self Drilling Screws Manufacturer Fasto

As a China Leading Bimetal Self Drilling Screws Manufacturer, Fasto Industrial Co., Ltd. (Fasto) provides the technical ...
Ars Technica

Drill Bits! HSS vs. Titanium vs. Carbide or Cobalt

When I was drilling through a hardened steel I went to a specialty metals shop and they recommended cobalt bits. They were also much cheaper than lows but unfortunately have since gone out of business ...