New Compartment doors - How do I cut the holes for the locks?

[NicheVintage]

Brand new doors rec'd today. Need to cut the holes for the new locks. I know that there are specialty hole saw bits for metal... Is that what I need? Hate to have to drop 100 bucks on a set of bits for 2 access doors. I doubt I would ever use them again. I'm sure I can't use wood hole saw bits. Any ideas?

[68 TWind]

A step bit, may do what you need and it it a lot cheaper than a hole saw. Check Harbor Frieght.

[68 TWind]

Here is a link, sorry I didn't put it in first post.
Search results for: 'step bits'

[Tom Nugler]

I’m guessing you are putting in the key locks with the flat sides on the barrel to keep them from rotating.
I’d get out my Uni-bit step drill, and fine tooth round and flat files.
Drill out the center of the hole to the width of the flats, and then finish the opening with the files.
All of these tools are at your local hardware or big-box store. Probably won’t spend more than 30 bucks.
The Uni-bit is one of the handiest tools for making holes in sheet metal. You definitely be using it again.

Tom.