Drilling Sheet Metal Blind

For the cleanest hole clamp a second piece on top of the metal making a sacrificial sandwich.

Drilling sheet metal blind.

Drilling a hole in sheet metal with a twist drill is a rather straightforward operation. You start off by drilling a small diameter pilot hole and then drill gradually larger holes until you get. Self drilling screws also called teks have a tip that resembles a drill and often have spaced threads like sheet metal screws. They re just the thing when you need a perfectly sized clean hole in a steel junction box electrical service panel or even a stainless steel sink.

The most important difference is that you will need to use screws designed for metal rather than the wood screws supplied with the blinds. Hex washer head machine screw assembled to a slotted aluminum sleeve and epdm sealing washer. A step drill bit for metal allows you to drill holes in a variety of diameters and some will drill through. Venetian blind installation is a straightforward process on frames made from wood and other soft materials but harder metal frames require additional preparation.

Positioning and boring the screw. Do not use self drilling screws in blind holes holes that do not pass through the material. If thin metal must be drilled and a support cannot be rigged under the thin metal then a drill designed. When drilling thin sheet metal clamp the metal over a piece of sacrificial plywood or other flat sheet good like mdf or particleboard to help prevent the bit from tearing up the hole.

When drilling thin workpieces such as sheet metal place another piece of metal or wood under the workpiece to provide support and prevent bending the workpiece or ruining the hole due to the upthrust created when the drill breaks through. Step drill bits are designed to drill holes in sheet metal and other thin materials. Perfect for blind hole fastening sheet metal or metal roofs. Fab lok fasteners are a high strength fastener for blind fastening to light gauge steel high clamp up resist severe vibration weather tight.

Get free shipping on qualified duct sheet metal specialty drill bits or buy online pick up in store today in the tools department.