Lift the drawer cabinet into the frame and position the shelf on it, with front edges flush. Mark the shelf along the outside to countersink and secure with 40mm screws, then remove the drawer cabinet. Turn the frame upside down to add the back piece, countersink the sides and secure with adhesive and screws. Cover all screws with timber filler and leave to dry.
On the base of the frame, use a combination square to position leg plates 20mm from the front and back. Mark the centre holes, then remove the plates to drill through with an 8mm bit. Reposition the plates, secure with the supplied screws and twist in the legs. Sand the frame all over, wiping away dust with a damp cloth.
While the cabinet is upside down, use a mini roller to paint the legs. Turn the cabinet right-way up to paint all over, applying at least two coats, leaving to dry thoroughly after each. Tip: Paint inside the shelf and around the front of the drawer cavity, but there’s no need to paint into the back as it won’t be seen.
Position the drawer cabinet in the frame, checking the drawer front is flush with the frame, then remove the drawer. Secure the cabinet to the frame from the inside using 30mm screws into the sides and base. Install the drawer and add glides to the legs, securing with the supplied screws.