heavy pressure. slow speed NO OIL, i can cut holes all day with this method. also. lennox hole saws and hacksaw blades are the best standard holesaw on the market. if you run the speed up you'll temper the stainless and regret it. the special greenlee dies are bronze colored . but ive found for 1/2"-1" you do just as much work making the hole for the lug as hole sawing. also, try using an 11/4 fender washer to stop the holesaw from digging in when you drill your pilot hole.
