Fabrication

The fabrication of the boat hull was a process that spanned across the entire semester and work was done on it in parallel to all of our other project tasks. The first step was to create a scale model of the hull in Solid works. With this we could then print out each section of the hull onto paper and use those drawing to cut exact pieces of depron. Depron is a stiff, lightweight foam which became the foundation for fiber glassing. Fiberglass is a lightweight cloth which can harden into a hard outer shell once combined with epoxy. Just before fiber glassing, we taped all of the Depron foam pieces together. We then used the paper cut outs to cut exact pieces of fiberglass which were then adhered to foam with epoxy. Another coat of epoxy was added to ensure that we achieved a perfect seal all the way around the boat. Next was sanding whose goal was to eliminate bumps and unevenness greatly reducing water drag. A final coat was added to boat in a process called fairing. It gave the boat a much smoother finish and also made it slightly more buoyant. A bit more sanding was done in this phase but then it was on to painting. The hull was spray painted black to give the boat a much more sleek and stealthy look. Future iterations might include flame retardant paint to further protect the boat from accidently catching a flame when battling fires.

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