Drilling Through Metal Door

If you re drilling hole.

Drilling through metal door.

To 3 16 in you can drill through most metals at 3 000 rpm. And heat dulls bits quickly. A small hole will let them engage. It depends on what size and how many holes you re drilling.

Drilling through steel is not an everyday home repair activity and drill bits for metals are the most expensive. Self tapping screws suggest that you don t need a pilot hole but they re really meant for sheet metal. There are two types of drill bits that you can count on for metalworking projects. Drilling steel is not like drilling wood.

If you re trying to make a 1 2 size hole then that s easy unless the door is hardened. You could just use a black oxide deltill bot found at most hardware stores. 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. Hard metals like steel and larger drill bits require even slower speeds.

With a small twist bit 1 16 in. Regular drill bits can t cut through steel so you need a heavy duty hard drill bit to do the job. 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.