How do you make a hole in a metal door bigger?

Can you use a hole saw on a metal door?

Hole Saw for Metal: Drill large holes in metal

In metal, always use bimetal hole saws and keep the teeth sharper longer by using lubricating oil. But if you’re cutting a hole in your steel door for a deadbolt, or cut lots of holes, step up to a bimetal hole saw for metal.

What are boring tools?

: a boring bit with its supporting boring bar and arbor, used to enlarge and accurately finish a large bore previously formed by casting or otherwise.

What drill bit do I need for metal?

Regular drill bits can’t cut through steel, so you need a heavy-duty, hard drill bit to do the job. There are two types of drill bits that you can count on for metalworking projects: titanium and cobalt. Titanium drill bits are high-speed steel drill bits (HSS) that have a titanium oxide coating.

Is WD 40 good for drilling steel?

WD-40 Multi-Purpose Cutting Oil

Our Multi-Purpose Cutting Oil is specifically designed for use on stainless steel and titanium components. It prevents pitting and metal seizures, eases mechanical processing of metals, and reduces frictional heat accumulation and damage from frictional forces.

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