After drilling many 3/4" holes in a 1/8" socket with Blair's Holcutter, I knew that I want Blair cutting tools are great for working with heavier materials as long as you use them properly. This on the shaft in front of the bit gives you something to turn to break up the post-cut friction. Also use some sort of cutting lubricant so your cuts are quick and pain free for your tool and metal. Oh, and be careful with the Fork ejection, they pretty hot and strong!