Cutting Round Holes In Sheet Metal

Punch a hole through the metal using a cold chisel and mallet or drill through with a heavy duty drill.

Cutting round holes in sheet metal.

When cutting out a circle one or sometimes two cutting tools are rotated about a center point to. For easier to drill metals like aluminum brass or cast iron lubrication isn t usually necessary. Use clamps to hold the sheet. You ll need a drill sheet metal snips a start collar.

Follow few steps step 1. Any tin snips will work for this. 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.

Lubricating the bit reduces friction and heat buildup which makes drilling easier and your bits last longer. I guess i ve got holes on the brain lately as i am finishing up the hole wizard for the g wizard conversational cnc product. At first locate the center of the. If you are talking about a hole the size of your fist or odd shaped this works pretty well.

Photo 3 shows how to cut through thick metal. For this step you ll need a compass ink and a center punch. But when you come to the thicker locking seam you ll need the extra leverage of compound snips. How to cut holes in corrugated steel.

Or thicker use cutting fluid or a multipurpose oil like 3 in one. Create a paper pattern of the size and shape of hole you wish to cut. First if you want to cut a duct near the middle and use both ends mark and cut the duct before snapping it together. For drilling holes in steel that s 1 8 in.

Then use a rotary bit or file or other method to clean it up the edge to your scribe line. When drilling or punching a hole in sheet metal you more or less cut out the entire hole at once. In response to a question about h. In this video we show you the best and safest way to cut a round hole into a can or rectangular duct.

There are two ways to cut round ducts. Depends on how big a hole you are talking about but there is a technique they tought us i am an aircraft structural repair guy called chain drilling. All you do is use a normal drill bit 125 or so and drill a series of holes right next to each other like a chain inside of your scribed line.