Drill bits

Also for cobalt bits, invest in a small bottle of Boelube. Developed by Boeing aircraft to keep cobalt bits sharp when drilling through titanium. Its like a white wax type substance. You start drilling just enough to warm the bit, then dip it in the Boelube, and keep drilling. It helps keep cobalt bits sharper longer. You can buy Boelube and clecos and all kinds of metal working tools from aircraft sheetmetal tool supply places like www.browntool.com or www.yardstore.com or www.aircraftspruceandspecialty.com a 1.6 oz push tube of boelube is about $5.00