The engine, or in this case, motor cowl, has been first modeled from a solid block using sandpaper… glasses and a mask. Once happy with the shape, I started laminating the epoxy and fiberglass mats in various weights. For the epoxy I once again looked in the prochima line of products and ordered the E-227 resin.
After the first sanding of the fiberglass (again, wear masks, glasses and gloves!) i covered the whole cowl with a mix of epoxy and microbaloons. I had to play a bit with the proportions to find the right consistency but at the end it turned out jus fine. Of course after that there was another nice and long sanding session to get back to the desired shape, but if done right, the final result repays for all the time and efforts!