The key dimension here on the sprocket is the pitch because it must match the pitch of the track. The pitch is 11mm here and I chose the sprocket to have 20 teeth which gave me a pitch diameter of the sprocket of around 69mm. The idea for the size of the sprocket was to be...
Add shims to create a 1/8″ clearance all around. I like using these reusable plastic spacers. Add temporary screws through the holes for the hardware into the drawer box. These can be pretty long screws. Once attached, open the drawer and add countersunk screws from the inside of the...