Added a sliding drawer set for my mom's Christmas gift.  Used the existing shelves for the drawer bases with 1/2 in. plywood for the frames.  They are finished with alder boards to match the existing cabinets.  Each drawer is attached with 100 lb per draw rollers.  This was my first time making sliding drawers and I did learn some things that will make it easier the next time.  Overall it works well and should work well for years to come.