How to use chisels instead of files to cut a share hole for carriage bolts.
How to best make a 2 hole in sheet metal.
Place your sheet metal on your steel block and position your centre punch at a central point in your cut out design.
Simply sandwich the sheet metal between two pieces of wood and clamp everything down on a table or workbench.
Place the die over the draw stud before inserting the stud through the pilot hole.
Blacksmithing for beginners cutting a square hole in sheet metal.
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.
Tap your hammer to leave an indentation on the sheet metal.
Next use a compass to outline the edge of the hole.
Use your center punch to strike at the center of the hole.
At first locate the center of the whole.
Put your ink to the use and mark the hole center.
For clean precise holes in thin sheet metal make a wood sandwich.
Now it s time to use that center punch.
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.