Measure from the edges of the sheet metal to the point at which you wish to place the hole.
Cut 4 inch hole in sheet metal.
The steel hole saw can drill almost 2 in.
Next use a compass to outline the edge of the hole.
Bi metal hole saw 49 56 9647 steel hole saw cut holes from the home depot.
Use your center punch to strike at the center of the hole.
The pilot hole will help you positioning the drill bit and than just drill.
Now drill the final hole at the desired diameter with the corresponding twisted drill bit but put a cloth between the bit and the metal.
Since this is a small hole a normal drill bit will work well in the sheet metal without extra precautions.
Bi metal hole saw to cut holes in a variety of materials.
Find the milwaukee 4 1 4 in.
In contrast to how twist and step drill bits operate hole saws work by cutting out the edges of an opening.
For large holes a hole saw gets the job done cleanly and quickly.
Step 1 create a paper pattern of the size and shape of hole you wish to cut.
At first locate the center of the whole.
Use a scrap of plywood as a backer for the hole saw s pilot bit and to protect your work surface.
Metal cutting hole saws are typically available in 3 4 inch to 6 inches in size and.
In response to a question about h.
Now it s time to use that center punch.
Place the tips of.
This will create dimples in the sheet.
Then create a pilot hole within the penciled circle using a power drill fitted with a 1 2 inch or greater metal cutting bit in order to accommodate the jaws of the tin snips.
Use the milwaukee 4 in.
Put your ink to the use and mark the hole center.