How To Drill A Hole In Sheet Metal

Since this is a small hole a normal drill bit will work well in the sheet metal without extra precautions.

How to drill a hole in sheet metal. Your first step should always be to locate the centers of all the holes you will need to. The pilot hole will help you positioning the drill bit and than just drill as usual. The cloth prevents the drill bit to dig into the metal without the need of changing the rake angle. To 3 16 in you can drill through most metals at 3 000 rpm.

Using a black marker pen mark where you want to start drilling. You could also make a small dent using a hammer and. You ll need to start by securing your metal sheet in place before. Drill a small pilot hole in the required location 3mmø with the drill spindle stopped locate the folded cloth centrally over the hole and fit the large diameter drill to the machine no need to use further pilot holes if you use the correct speeds and feeds.

If the point is even with the outer tips of the drill you cannot pick up you mark and the drill will walk around the surface as you try to drill the hole. It s not as effective but much simpler. Twist drills are great. The scallop you see on the right side of the drill in these views is the relief angle that must be.

For the cleanest hole clamp a second piece on top of the metal making a sacrificial sandwich. With a small twist bit 1 16 in. In general it s a good idea to drill through metal using as slow a speed as possible using a drill bit for metal. Always use a clamp or three.

How to work with sheet metal step 1. Hard metals like steel and larger drill bits require even slower speeds. 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. How to drill a hole in metal with a rotary drill kit this process is just like piercing a hole in metal.

A point at the end of the drill to place in your center punch mark to start.