Tap your hammer to leave an indentation on the sheet metal.
How to cut a round hole in metal sheet.
Hot metal chips will fly.
Step 1 create a paper pattern of the size and shape of hole you wish to cut.
Like twist bits hole saws chuck right into your drill and will cut through thin gauge sheet metals like aluminum and steel.
Position the pattern on the sheet metal where the hole needs to go and draw a line around it using a permanent marker.
It may not be an obvious choice but fitted with the right blade a circular saw is a great metal cutting tool.
When drilling or punching a hole in sheet metal you more or less cut out the entire hole at once.
When cutting out a circle one or sometimes two cutting tools are rotated about a center point to.
This is how easy it is to make a rounded edge on metal.
In this video we show you the best and safest way to cut a round hole into a can or rectangular duct.
In our test it cut through rebar like a hot knife through butter.
Rounding metal with the bevel heads from beveltools ensure a smooth and consistent rounded edge on sheet plate pipe and hole.
Cut metal with your circular saw.
You ll need a drill sheet metal snips a start collar.
Now it s time to use that center punch.
Put your ink to the use and mark the hole center.
Use a scrap of plywood as a backer for the hole saw s pilot bit and to protect your work surface.
Next use a compass to outline the edge of the hole.
Thick using a ferrous metal cutting blade.
At first locate the center of the whole.
Use your center punch to strike at the center of the hole.
Place your sheet metal on your steel block and position your centre punch at a central point in your cut out design.
This will create dimples in the sheet.
Measure from the edges of the sheet metal to the point at which you wish to place the hole.
Hole saws cut bigger holes for large holes a hole saw gets the job done cleanly and quickly.