Drill Holes In Sheet Metal

After you drill the hole it is possible to provide adequate corrosion protection for the drilled hole.

Drill holes in sheet metal.

Now drill the final hole at the desired diameter with the corresponding twisted drill bit but put a cloth between the bit and the metal. To drill a round hole in thin sheet metal take a piece of cloth for example an corner of an old tea towel cut into squares an old flannel or anything you don t mind cutting into squares and throwing in the bin once you have your nice round hole. They re just the thing when you need a perfectly sized clean hole in a steel junction box electrical service panel or even a stainless steel sink. Drilling a hole in sheet metal with a twist drill is a rather straightforward operation.

Electricians commonly use them for drilling holes in metal electrical boxes and housings. Since this is a small hole a normal drill bit will work well in the sheet metal without extra precautions. You start off by drilling a small diameter pilot hole and then drill gradually larger holes until you get. Place your sheet metal on your steel block and position your centre punch at a central point in your cut out design.

Another bit that s great for metal specifically sheet metal or thin plate metal is a step bit which is a cone shaped bit that drills a variety of hole sizes. Tap your hammer to leave an indentation on the sheet metal. The pilot hole will help you positioning the drill bit and than just drill. Depending on the tools you have you ll now need to punch or drill a hole where the indentation has been made to produce an accurate hole in your sheet metal.