Punching Holes In Copper Sheet

They create a smooth clean hole without barbs or rough edges.

Punching holes in copper sheet.

Here s a list of simple punches that do the job. Find the cross section in square inches of the section to be sheared. 16 mil 26 gauge copper. By the way a crop a dile will easily punch a hole in your copper sheet up to the 16 mil thickness.

So for example a diameter 5mm punch with a 0 2mm die clearance die will produce a hole that is diameter 5mm on the punch side of the sheet and diameter 5 2mm on the die side of the sheet. If the holes are in thicker sheet metal and are going to be tapped out with a thread after punching a smaller pilot hole may need to be punched and then. It can be texturized with a variety of objects such as a small hammer or polished for a smoother finish. You can see the crop a dile hole in the 10 mil and 16 mil sample photos.

Metal hole punch pliers. Chart showing tonnage required to punch a hole. This chart shows the tons of force required for punching a single round hole in mild steel derived by the formula. What size portable hole punch or hydraulic ironworker machine is needed for punching a hole size.

Just make sure the punch is designed for the type and gauge of metal you re using. The pliers punch holes in soft sheet metal copper gold filled sterling silver and brass up to 22 gauge. You don t need fancy or expensive tools for punching holes in the most common gauges of jewelry sheet metal. Spiral twist hand drill.

An approximation can be made of the cylinder force needed to punch a hole slot or notch using this method. Square inches to be sheared l w l w x t. For larger holes or use on thicker gauges of steel more. In the illustration it would be the distance around the hole perimeter multiplied by metal thickness.

Plus with the gauge.