precision drill. A 9/16" drill through a 1 -" mild steel plate for a bench mounted vise. We used a Hougen drill bit with a magnetic base. Motor oil was used as the cutting fluid. Depth from ½" to 5/8" in 30 seconds. My next choice will be HSS for the same be price.
🔧 DEWALT DW1361 Titanium Pilot 21 Piece Drill Bit Set: Ultimate Precision and Durability for Your DIY Projects
7 Review
DW1342 DEWALT Titanium Drill Set - 21 Pieces
5 Review
IRWIN Tools Countersink Set 5 Piece - Model 1877791
3 Review
💪 Exceptional Strength and Durability: TITGGI - The Ultimate Concrete Professional Industrial Solution
8 Review