Drilling Through Metal Door

Please forgive me if this is too basic but someone else might find it useful.

Drilling through metal door.

If you re drilling hole. Hard metals like steel and larger drill bits require even slower speeds. Drilling steel is not like drilling wood. Kitchen cupboard hinge cup drilling hole carbide steel forstner drill bit 35mm 10mm shank woodworking hinge boring hole saw for furniture door hinge hole kkq 35n 4 5 out of 5 stars 4 12 99 12.

And heat dulls bits quickly. Regular drill bits can t cut through steel so you need a heavy duty hard drill bit to do the job. They ll never get started in the steel skin of your door. Self tapping screws suggest that you don t need a pilot hole but they re really meant for sheet metal.

To 3 16 in you can drill through most metals at 3 000 rpm. In general it s a good idea to drill through metal using as slow a speed as possible using a drill bit for metal. There are two types of drill bits that you can count on for metalworking projects. If you re trying to make a 1 2 size hole then that s easy unless the door is hardened.

Drilling through steel is not an everyday home repair activity and drill bits for metals are the most expensive. Depress the drill trigger switch smoothly and cut a hole through the first metal cladding layer on the door through the foam core and then through the far side of the door s cladding. You could just use a black oxide deltill bot found at most hardware stores.