Best Way To Punch Holes In Sheet Metal

The usually have a rake angle close to 90 and a point angle figure below also around 90 instead of the classic 118.

Best way to punch holes in sheet metal.

This punch is the best all around sheet metal punch we offer but it does still require some labor effort to punch holes. With some punches it s difficult to. Twist drills are great for small diameter holes. For clean precise holes in thin sheet metal make a wood sandwich.

How to work with sheet metal. This tends to equalize the sheet stretching of both halves. Make a dimple dent to guide your punch or drill. It punches first with the smaller punch say 9 8 mm in diameter and then follows it with a larger postpunch like with a 10 mm diameter tool.

Using a step drill bit. Ares 10005 metal hole punch set 3 32 inch to 9 32 inch punches and dies included for aluminum brass and steel sheet metal and more 4 7 out of 5 stars 19 27 42 27. How to punch a hole in metal 1. We ll start by marking precisely where the punch hole will be in the metal.

Alternatively if a sheet has symmetrical hole patterns you may be able to punch half the sheet flip it over then punch the other half. Simply sandwich the sheet metal between two pieces of wood and clamp everything down on a table or workbench. Always use a clamp or three. Punching holes is an easy and effective method but one has to have a punch for every required diameter and shape and punches are expensive.

Your first step should always be to locate the centers of all the holes you will need to make. When hole shaving the machine uses the same die size but two different punch sizes for the same hole. Why make this little dent. 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.

Special drill bits suitable for sheet metal exist but are difficult to find. You can then use a. Measure and mark your metal.