How To Cut A Round Hole In Thin Sheet Metal

This will create dimples in the sheet.

How to cut a round hole in thin sheet metal. When drilling or punching a hole in sheet metal you more or less cut out the entire hole at once. Next use a compass to outline the edge of the hole. 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. Sheet metal drills a pdf drilling holes in thin sheetmetal have you ever tried to drill holes in thin sheet metal using standard drills and ending up with a ragged triangular shaped hole not anywhere near the diameter you wanted and perhaps requiring a trip the medicine cabinet for a band aid.

But you don t have to be a tinsmith to cut sheet metal successfully. Now it s time to use that center punch. Cutting sheet metal with snips can be tricky and frustrating. The edges are sharp the cutoffs are stiff and get in the way the snips bind or you just can t seem to negotiate the curve.

In response to a question about h. 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. 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. These problems are common for those of us who don t work with sheet metal every day.