I made the decision, and went for wooden drawer runners, so firstly I assembled the drawer carcases, there is nothing fancy about them, because they are so small, they are just glued and brad nailed. I will cut the bases at the week-end! The drawer face and handle will be the last things to be added.
I sorted out some mahogany scraps, the gap on either side of the drawer is 1/2", I have therefore cut all my runners at 3/8", and 10" long, there are thirty-six of them in total, for each drawer side there will be one mounted to the drawer, and two to the unit. These have all been countersunk and drilled ready to screw in place, once the drawers are completed and double checked to be square.