Make a sandwich for clean precise holes in thin sheet metal make a wood sandwich.
How to widen sheet metal hole.
With a combination of these manipulations you can create anything from flat sheet and you.
Not that it will be easy to do stainless steel sheet is relatively difficult to grind.
Tap your hammer to leave an indentation on the sheet metal.
It will be easiest with a dremel or similar tool and conical composite grinding bit.
Next use a compass to outline the edge of the hole.
Put your ink to the use and mark the hole center.
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.
Simply sandwich the sheet metal between two pieces of wood and clamp everything down on a table or workbench.
The wooden bread layers of the sandwich keep the sheet metal flat and prevent the drill bit from wandering as it bores through the sheet metal.
At first locate the center of the whole.
Opening up an existing hole to a larger size.
You ll need to remove 1 8 all around the perimeter.
Now it s time to use that center punch.
The tapered design will centralise then enlarge the hole to the required diameter.
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In response to a question about h.
Use your center punch to strike at the center of the hole.
Use your bit at high speed and hold on tight as it will want to jump once it grabs the metal.
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This will create dimples in the sheet.
Cut it bend it shrink it and stretch it.
Splitting wood cone drill bit wood log splitter auger splitting screw cone wood breaker tool.
Place your sheet metal on your steel block and position your centre punch at a central point in your cut out design.
After all there are only four things you can do to metal.