I got the sheets from Advanced Bedding, I put a link to them (and the other sites I ended up using) in the materials section of my write-up.
Some companies (even "traditional" mattress companies like Jordan's Furniture) will cut down mattresses from standard mattresses but they don't seem to build them up. I considered it myself but it's a lot of energy and I'm just glad it's done.
I had to chuckle at the part where you got a friend to help put the mattress cover on, because I've been exactly there - realizing I just built something I can't move myself.
Fun writeup about something I'd honestly never considered DIYing, though I'm familiar with (and heartily approve of) the materials.
Glad you enjoyed it. I had some other times when I needed help moving things and had to use some wedges but didn't want to bog down the write-up with too many details.
