The bolts were made out of 1045 and hardened/tempered with my oxy/acetylene torch. When I was working on the Dividing Head, I came to a point where I had to clamp a piece down to the mill table which was too large for my vise so I decided that instead of buying a Step Block and Clamp Set for about $75 bucks (CAD) at Harbor Freight (I might still buy one at some later time) I would make a quick set in my shop. Building a tie-down/clamping set for my metal lathe/millĭifficulty Level (Easy, Medium, Hard, Insane):