3mm steel frame with 1mm steel roof. 6mm MDF panels and 1mm steel window frames. The corners aof the MDF panels will need to be nibbled away where the welding lumps obstruct it. This happens on the top of the side panels and sides of the end panels.

Glue the MDF panels to the steel frame using a "No Nails" adhesive. The best adhesive are the solvent based ones such as "Gripfill" but these are hard to remove any overspill. Using small clamps squeeze any excess out and from under the frame.

Once all the excess glue has been removed clamp the frame down using battens to spred the pressure.

The 1mm steel window suround and boiler doors are simply glued on

SIDE SKIRTS

Turn the chassis upside down and place the side skirts so they are flush with the buffer beams. The welding on the underside of the deck may clash with the ends of the skirts. Simply cut a nick out using a hacksaw so the skirt will go around the weld.

Mark the holes in the skirt using a pencil and then drill out three 4mm holes on each side. Use 4 mm bolts to hold the skirts on.

The side skirts are then simply bolted on.