If you have a 3/16" to 7/8" step bit, what’s the proper speed on the drill for cutting 1/8" mild steel? If using a 2.3/8" hole saw. what’s the proper speed for drilling #2 pine? What’s the speed for the above steel? In general, can anyone post the various charts for hole saw, step bits, forstner bits, auger bits, normal drill bits etc. with the materials drilled thru modifications for those who don't have access to them?