Photo: David Prince
Refer to the illustration for hole locations. Measure and mark spots for pilot holes for the bottom tray; make sure they're ½ inch above the tray's bottom. Use a 3⁄8-inch bit to drill four holes through the tray's long sides and ledges.
Tip: When drilling large pilot holes, begin with a smaller bit size to create an accurate path through the material, then step up to the larger one.