Sauder Beginnings 5-Shelf Bookcase

First, bear in mind: I've had to build a LOT of particle board furniture over the years. When it's a decent product, particle board is an acceptable medium for long term use. This isn't it. The particle board is poor quality, large chunks, not dense, and the matrix the wood "particles" are bonded in was loose. The cams and bolts are also poor quality, with 1 mis-molded bolt in the package (they sent a spare). But that makes me worried about the metal that's used. And finally, the nails for the cardboard back had very small heads...which is a major design flaw because they expect the cardboard back to be the item that provides rigidity for thus product. See below. The top and bottom of this is held in place by a single small screw and 4 cams. Worryingly, they have you build the top as a full box, and then mount the bottom 3 panels to the top. For stability, this should be the other way around. The bottom should have been the full box. When fully assembled, this leans to and fro without the cardboard backing. LET ME BE CLEAR: THEY EXPECT THE EIGHTH INCH CARDBOARD BACKING to be the part that gives this product stability. No, sir. Just...no. After all that, here's the unsurprising bit. I built it exactly per its instructions. Used all the nails for the backing because, unlike the other shelves from another vendor I was building that day, I felt like this one needed them. Went to (carefully) move the unit into the office space it was to be used in. The cardboard immediately ripped free, and the cam bolts holding the top to the bottom pulled out of the already-mentioned poor quality particle matrix. It folded like a house of cards. I had moved the unit a total of 30 feet with a dolly. In short: if you're gonna buy this thing, build it in the room you will use it. Don't expect to ever move it. But even then? Honestly, I wouldn't even trust it to support the weight of your average FEATHER COLLECTION.