I have some wardrobe cabinets from Ikea and I would like to install a few more shelves. The partial or half-holes inside are only at the top and bottom of the cabinet interior, as they were designed to have a clothing pole in the center section. So, to convert them to all-shelves I have to figure out how to drill those holes that are only deep enough to hold the shelf support clips.
Does anyone here know how to do this? We have a drill, but what else do I need? I should mention too that the item is made of MDF-type material with a finish on it, not solid wood.