How To Make Large Holes In Sheet Metal

Typically the hole is large and the sheet metal won t fit on my cnc milling machine so i m left flailing.

How to make large holes in sheet metal. Like twist bits hole saws chuck right into your drill and will cut through thin gauge sheet metals like aluminum and steel. For large holes a hole saw gets the job done cleanly and quickly. How to use chisels instead of files to cut a share hole for carriage bolts. In this video i want to show you how make a hole for switch to the thin sheet metal.

Use a center punch to make a small dent in the surface of the metal to prevent the drill bit from sliding away when starting to drill. You could also make a small dent using a hammer and. Use a piece of scrap wood to prevent the sheet from bending when working on it. In the second part of the video i will show you how to make the hole to.

Use a scrap of plywood as a backer for the hole saw s pilot bit and to protect your work surface. Step bits can be used to make even larger holes typically 1 3 8 inch wide or smaller in sheet metal but do require pilot holes. How to drill a hole in metal with a rotary drill kit this process is just like piercing a hole in metal. Blacksmithing for beginners cutting a square hole in sheet metal.

It is common practice to use a self starting step bit to form the. First mark the exact position of the holes and install the piece in a vice. Using a black marker pen mark where you want to start drilling. You ll need to start by securing your metal sheet in place before.

Hole saws work well and.