How To Fabricate Fiberglass Body Panels? You can make fiberglass panels by using a simple method. First, get your mold ready. Next, put the fiberglass on the mold. Then, add resin to the fiberglass. Let the panels dry and harden. After that, cut and finish the panels. Pick the right fiberglass, resin, and safety gear. This helps you make panels that are light but strong. Many beginners make mistakes. They rush the drying or skip careful sanding. This can hurt the quality of the panels. Take your time with every step. Being patient gives you smooth and strong panels. This works for both small and big fiberglass panels.