It's a diffuser for the light. Lense from a 2x4 fluorescent light fixture?

Sound like a good one. Have you tried Brutal Rust? brutalrust.com

TheBuildCave : No I have'nt tried that, and then again there are no such specialized products to be found here in Iceland do to the small market and ordering via the net is too expensive, specially if one can think of an alternative solution. I was a producion designer for Icelandic moves an tv for decaids and the shoestring budgets called for quick and cheap solutions. That is where I come from. Most effects are based on personal insight, feeling and what is at hand, rather than someone elses canned products. :)

Not clickbait cause it's his rabbit and the dog ate it

I guess it doen't show it in the video but I glue the edges down with E-6000

It's not listed as a tutorial

No pancake mix used here. I did use sand in latex paint though.

There is no point. I was going to demonstrate two different looks on this piece but some of my footage was lost.

Looks great except i have no idea what all you used. I didn't get the blue at all????