Cutting Large Holes In Sheet Metal

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Cutting 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. 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. For large holes a hole saw gets the job done cleanly and quickly. This break will create the fracture region.

In a well designed sheet metal cutting process the cracks should meet each other and form a continuous break. Tap your hammer to leave an indentation on the sheet metal. Be that as it may here is a neat idea from flyboy accessories for cutting larger holes in sheet metal. How to cut a round hole in sheet metal.

It s meant for creating lightening holes of the type seen when building aircraft or maybe just toolboxes and furniture that are built like wwii fighter planes. It is common practice to use a self starting step bit to form the. Follow few steps step 1. At first locate the center of the.

I ve messed with trepanning tools abrasive wheels hole saws and all manner of other stuff for cutting large holes in sheet metal. For this step you ll need a compass ink and a center punch. The fracture region starts at the end of the burnish region and occupies most of the rest of the thickness of the cut with exception to the burr. Use clamps to hold the sheet.

Place your sheet metal on your steel block and position your centre punch at a central point in your cut out design.