How To Drill A Round 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.

How to drill a round hole in sheet metal.

Since this is a small hole a normal drill bit will work well in the sheet metal without extra precautions. To setup the punch first drill a pilot hole into a piece of sheet metal with a step drill bit. In diameter but you ll get the best results by starting with a 1 4 in. For this step you ll need a compass ink and a center punch.

A draw stud punch and die. The scallop you see on the right side of the drill in these views is the relief angle that must be. 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. The diameter of this pilot hole should be slightly larger than the chisel length picture below of the final bit.

How to cut a round hole in sheet metal. Tap your hammer to leave an indentation on the sheet metal. Place the die over the draw. In response to a question about h.

A point at the end of the drill to place in your center punch mark to start. Hole and drilling successively larger holes with your drill bit for metal until you reach the size you want. Advance the drill through the thin sheet metal it may be difficult to get the drill to start cutting but a gentle force should be used until the cloth has been pierced taking care not to distort the sheet metal the drill will then advance normally through the metal but the resulting hole will be both round and assuming drill geometry is not miles out the size will be spot on. Use clamps to hold the sheet.

Than drill a smaller hole to guide the final drill bit. At first locate the center of the whole. If the point is even with the outer tips of the drill you cannot pick up you mark and the drill will walk around the surface as you try to drill the hole.