My backsplash renovation... My Amerigo story continues

What did you use to stick the tile to the ply?

Is there more of this story? What is your countertop? Looks good...I did a similar SS tile on my boat way back in 1979 behind my diesel stove. Worked well. In my TC I am thinking of getting sheet SS cut to fit and edgeds folded like I did in house behind the stovetop. Already have my SS sink ready for new countertop.
THX for posting your work!

Very nice! Looks better than a lot of houses I've seen!

New countertops but
the sink is original making it almost 40 years old.

Looks nice!!! I was considering a backsplash when we purchase. I like it!