What is it?
A countersink is a conical hole cut into a manufactured object; a countersink bit is the cutter used to cut the hole. Who uses it and why? Carpenters and mechanics use these bits the most. What materials can they be used on? They can be used on metal, plastic, but more commonly wood. How is it used? They are commonly used by allowing the head of a bolt or screw, with a shape exactly matching the countersunk hole, to sit straight with or below the surface of the surrounding material. What are their distinctive features? They are shaped like a sturdy rocket with cuts carved into it to facilitate drilling. Usually made of metal or other hard material. Sizes vary. Where can I buy it? Local Home Depot and Sears stores have it in storage. How much does it cost? They cost about $10.00 to $40.00. |