Ken
I made mine out of 3/4 inch Melamine --sides, top and back, even the slide part. I edged it all with oak, no open edge anywhere. I made it 52" tall with locking casters. It is 22" deep,using 3/4 open, slides, with slides fastened on edge of 3/4 Melamine. Frank P. had made his about the same time and had put counter weight on back to keep it from turning over, when too many drawers are open at same time. This is what made me go with extra depth and use some 3/4 slides I already had.I use the term drawer for lack of a better term,they have no sides,no back.apart from slides. Each front has one handle in the center.it' more like a lip with handle and two shelf pins just behind systainer. This design gave me the option of putting counter weight inside at bottom. I built two and should have built four. With all drawers open and no counter weight, I have had no problem because of extra rearward mass. I could always add counter weight if needed. On the next two I build I am thinking of adding a door at the back with shelves, with the back just behind the slides for strength,and so it could not rack.