VEVOR Magnetic Drill, 1450W Motor 1.6 in Boring Diameter, 2810 lbf Portable Electric Mag Drill Press, with 11 Coring Bits, 850 RPM Speed, Drilling Machine for Metal Surface, Home Improvement Industry
I used clear thread cutting oil I purchased from Menards. Drilled ten 1/2" holes in one sitting, neither the cutter nor the metal even got warm. I was drilling thru a heavy steel Kubota loader bucket.