Ever wonder how they make exp metal? Here is a video link...Bob
Expanded Metal Video by AMICO

I always wondered, now I know. Very informative video.

Thanks for the link, Bob!

Cool video. It look like the sheet is the same width before and after?

Element, I think a 4 ft x 8 ft sheet becomes three sheets when done with the slotting/expansion. They just cut them 4 x 8 coming off the machine.

A quick caution--do not assume that the 4x8 sheet are true dimensionally. I am in the process of building a project with 10 sheets of this. I found out that the best that you can count on is 47.5 by 97.5 because of variations in size and alignment of the edges. Mostly i could get one side and end to square up and had to trim the other sides. Use a jig of OSB to guide your angle grinder. Eats up cutoff wheels like crazy. (About one per sheet)

That's a good video. Thanks for posting.
Phil