The project steps for building DLE-FJ-50-00 are much similar to the project DLE-FJ-14-00. Have a look at it for more detail reference.
The first step starts from preparing the parts’ from the foam sheets. In this project, 2 sheets of foam ( 1m x 1m x 5 mm) are required. It is highly recommended to use a utility knife with a sharp blade for a smooth and clean cut and a hobby knife for cutting the narrow-shaped holes.
The second step is to make the edge bevels and the double bevels for folding lines of the parts and the hinge lines for the control surfaces. Strengthening the fold lines also applies in this project by using tape along the lines.
The third step involves preparing the control surfaces; the elevons (mixture function of ailerons and elevator). The elevons are cut from the main wing parts. The hinges of each respective control surface are constructed by using tapes.
The next procedure is to prepare the narrow holes for the carbon tube spar. Refer to the Design Plans for the carbon spar installation location. After the carbon tube spars have been located properly, secure them using thin layer of hot glue; flush to the surface of the foam.
The following step is to assemble the electromechanical system of the plane; the servos, the motor, the ESC and the receivers.
The fourth step is to make the nose block; a foam solid block is shaped and glued to fill the front of the nose to increase strength for any impact.
The final step is the final assembly process. Assemble all the remaining parts together to the main wing (the fuselage section and the vertical stabilizers at 68° from the main wing level). The configuration process of the C.O.G (Center of Gravity) implements the similar technique as the project DLE-FJ-14-00. Make sure the batteries are included during this process. Mark the position of the battery and set the battery to that particular location for each flight. (Please note that different battery spec (weight and dimension) will alter the previous C.O.G preset; in that case a C.O.G reconfiguration process is required).
Have fun building and make sure to share the experience. Good luck.