That rack I had made for my first litter of boas ended up being a pain in the butt because many of the shelves started sagging after awhile making it hard to slide the tubs in and out... probably because I got the wrong kind of melamine with which I THOUGHT was melamine... The surface of the side pieces of melamine had the more hard rough-ish texture than the others; the others had a more smooth surface and when I took the gorilla tape off it took the surface off like it was paper... so it was those pieces I probably screwed up on... yep.
Great how-to.