For composites I decided to build a tray to hold shopbot bits, collets and other small parts that will be inserted into the drawer of the cabinet of the final project. I made a design using AutoCAD inserted it into part works and cut the mold on the shopbot. For the fiber I cut up the bristles of a paint brush into about 1/8 to 1/4 inch pieces. At first I added a piece of cloth to the bottom to add reinforcement but ended up removing it after air bubbles rose from the resin and forced the cloth above the resin. Next due to the large mass of resin the mold released a tremendous amount of heat melting the styrofoam about a 1/4 inch back around the perimeter. It was also releasing fumes or steam so as a precaution I put the entire mold in a metal tray and in the welding shop next to the ventilation. The top surface is also bubbling up. Maybe I should do many thin layers next time. Maybe also use the vacuum bag system, it seemed unnecessary for this type of project. After breaking the mold and using a hacksaw in places the result was less then speculator. The basic shape is there but the finish is rough, styrofoam is a bad mold choice. Much more fiber and much less epoxy would be a much better choice for this project. Onto try number 2, a much simpler project, the fablab logo. I laser cut two cardboard and one fabric layer and using the vacuum system assembled them into a composite. The final product was better and OK for a second try but not anywhere near perfect. Mold file Logo file