These shocks have been designed to be used on Mr. Crankyface's 3D printed truck.
Some additional material is needed in addition to printed parts.
The parts "Cabeza_A" and "Cabeza_B" must be glued using cyanocrylate. The nail and the spring are introduced into the piece "Cuerpo" and then the glued parts are Threated into the piece "Cuerpo". Finally, "Anclaje" piece is also glued to the nail using cyanocrylate.
It has been tested in the forest in real conditions and is quite durable and efficient.