In my case it was one of those typical you-put-it-together-yourself kits, and there were many unfinished edges exposed that were covered up once you assembled all of the pieces.
Well that link didn't work...session timed out. I will offer up my own anectdotal evidence to refute your claim though. I have an entertainment center made out of 3/4" MDF that has sagged over time since I bought it 8 years ago. The top shelf in particular is convincing that MDF is a poor...
Initially that 22" MDF might look like it'll hold over 50lbs, but over time it'll eventually sag(aka creep). Since it doesn't have any grain, MDF has 1/4 of the strength of an average wood according to that article in American Woodworker. There are other ways to strengthen shelves though by...
Building shelves out of solid wood like oak can be problematic if you don't have a woodworking shop since you won't be able to find boards that are 20-24" wide. As far as strength goes, in an American Woodworker magazine article back in 1999, they recommended a shelf no wider than 22" between...