Sometimes a kit is lacking in detail, has a broken piece, or requires some extra work to come out they way the builder wants. That is were scratchbuilding comes in.Scratchbuilding does not always mean creating a complete model from scratch, using household items and sheet styrene plastic. It can be as simple as recreating a part lost from the sprue, or adding to a kit to make it a derivative of the original subject.
Adding to a Kit Sidewinder bay and missile 'Trapeze' built out of sheet styrene and spare parts. The doors where cut out and replaced with sheet plastic. The missile rail armatures were made from old landing gear oleos. Wiring harness recreated with wire strand from an old lamp cord. Replacing Plastic with Other Materials Rocket Assisted Take Off unit, 'dented' with a Dremel Tool and the original plastic molded parachute pack was replaced with one made from tissue paper, Elmer's glue, and masking tape strips. Modifying a Kit Basic kit requires fuselage pieces be glued together. 
Holes drilled out for plastic rod. Styrene rod inserted through spinner. The rod will be glued to the fuselage and cockpit allowing the propeller between them to spin.
Reinforcing Gun Barrels
