Enlarging Hole In Sheet Metal

Enlarging an existing hole especially in hard materials such as steel or hardwoods has traditionally been difficult to do accurately.

Enlarging hole in sheet metal.

Enlarging 1 75 hole approximately in sheet metal. For clean precise holes in thin sheet metal make a wood sandwich. Dark ages crossbow full making process duration. Enlarging a hole by a small fraction of the cutting edge in a potentially hard material is one of the worst things you can do with a twist drill and a masonary bit is far worse for enlarging holes with rather it needs the stabilizing effect of the center point rotating in metal.

Let s take a look at the best practice for doing this efficiently. There are many times when a metalworker will need to enlarge a hole to accommodate a larger fixing. Simply sandwich the sheet metal between two pieces of wood and clamp everything down on a table or workbench. It is common practice to use a self starting step bit to form the large pilot hole needed for a hole enlarging step bit.

Elber arias 7 726 views. Topics include machine tools tooling precision measuring materials and their properties electrical discussions related to machine tools setups fixtures and jigs and other general discussion related to amateur machining. The wooden bread layers of the sandwich keep the sheet metal flat and prevent the drill bit from wandering as it bores through the sheet metal. Tod s workshop recommended for you.

Hole saws for large opening. While some holes in sheet metal may.