Place your sheet metal on your steel block and position your centre punch at a central point in your cut out design.
Cut a 8 round hole in sheet metal.
How to cut a round hole in sheet metal.
This video shows how to.
Next use a compass to outline the edge of the hole.
Step 1 create a paper pattern of the size and shape of hole you wish to cut.
In this video we show you the best and safest way to cut a round hole into a can or rectangular duct.
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.
For this step you ll need a compass ink and a center punch.
Using a hole saw to cut holes through metal can be difficult and dangerous if you do not know how to use the drill s safety features.
You ll need a drill sheet metal snips a start collar.
Now it s time to use that center punch.
When drilling or punching a hole in sheet metal you more or less cut out the entire hole at once.
Follow few steps step 1.
Position the pattern on the sheet metal where the hole needs to go and draw a line around it using a permanent marker.
Measure from the edges of the sheet metal to the point at which you wish to place the hole.
Tap your hammer to leave an indentation on the sheet metal.