Cutting Large Holes In Sheet Metal

Follow few steps step 1.

Cutting large holes 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. Be that as it may here is a neat idea from flyboy accessories for cutting larger holes in sheet metal. In response to a question about h.

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. 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. Place your sheet metal on your steel block and position your centre punch at a central point in your cut out design. Use a scrap of plywood as a backer for the hole saw s pilot bit and to protect your work surface.

Use clamps to hold the sheet. Tap your hammer to leave an indentation on the sheet metal. At first locate the center of the. For this step you ll need a compass ink and a center punch.

In a well designed sheet metal cutting process the cracks should meet each other and form a continuous break. 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.

Don t say that you were thinking of holding that metal sheet with bare hands.