STEP BY STEP
It’s important to get the mating faces of each joint as flat as possible so that the parts marry up neatly. Flat files are great for rendering the edges straight and true, but take care not to remove too much material. Always test the fit of the parts before applying glue. With a set square to check the angle, one end of the van can be fixed to the floor by running the liquid poly cement along the inside of the joint. The bond will be strong enough after a few minutes to allow assembly to proceed, adding one side and the other end. If the parts don’t meet perfectly, internal reinforcement is possible using plastic strip and angle.
Check alignment before clamping the assembly with masking tape. Working on a sheet of glass ensures that the wagon is truly square, which will be essential when the chassis and wheels are eventually added. Allow the body to cure overnight before installing the roof. To allow for a greater degree of adjustment, a slower drying glue is employed. Run a fine bead around the top of the sides and ends. Place the roof in position and check that the overhang is even on all sides before clamping with another strip of masking tape to hold everything together while the adhesive cures. Fill any gaps with putty.