Construction mark the centerline on the frame first and lining them with the centerline on Construction of the canoe began each section as shown in Figure 14. with purchasing aluminum sheet metal, which came in rectangular sheets Figure 14: Cross sections being mounted to the mold frame approximately 4 feet wide, 12 feet long. Spacers composed of long threaded The intent was to create a female mold rods, couplers, washers, and nuts were using these as stations. Printed cross placed so they connected all the sections were traced, carefully marking sections and could be adjusted for even the centerline and matching up that of spacing. Next, small 90 degree bends the print outs with that of the metal. The were made in strips of aluminum to traced lines were cut as close as create angle brackets and were possible using a band saw. Once the attached to the top of each cross section cross sections were cut, a centerline for the purpose of securing the sheet was marked on a large table. The metal that would be placed inside later. sections were lined up one by one for the front half of the canoe. Ensuring To create a template for the that they lined up correctly, a clamp was inside mold, paper was placed placed on either end to secure them. A inside the frame in sections and hole was drilled in either corner, 2 carefully smoothed to mimic the shape inches in from either direction. Four of the canoe. Then it was traced and holes were drilled in the bottom edge of cut, which was then used to cut the the metal. Two of these were 4 inches sheet metal to create templates. This out from the center, and the other two year, we received new rolling equipment were 8 inches out from the center. This that could easily bend sheet metal. This was done for the purpose of securing lead to more accurate and smoother them to the frame. The process was metal sections, ultimately speeding up repeated for the back half of the canoe. the construction of the canoe mold. The sheet metal then had to be placed in the The frame from the previous mold, riveted together, and bent 90 couple years was reused, as the canoe degrees at top to secure it to the angle geometry can be changed by creating brackets created earlier as shown in new cross sections and is not affected Figure 15. The sheets fit together by by the frame. The metal cross sections using a machine to create a groove in were secured to the frame, ensuring to some of the sections. Once all of the
Construction Construction of the canoe began with purchasing aluminum sheet metal, which came in rectangular sheets approximately 4 feet wide, 12 feet long. The intent was to create a female mold using these as stations. Printed cross sections were traced, carefully marking the centerline and matching up that of the print outs with that of the metal. The traced lines were cut as close as possible using a band saw. Once the cross sections were cut, a centerline was marked on a large table. The sections were lined up one by one for the front half of the canoe. Ensuring that they lined up correctly, a clamp was placed on either end to secure them. A hole was drilled in either corner, 2 inches in from either direction. Four holes were drilled in the bottom edge of the metal. Two of these were 4 inches out from the center, and the other two were 8 inches out from the center. This was done for the purpose of securing them to the frame. The process was repeated for the back half of the canoe. The frame from the previous couple years was reused, as the canoe geometry can be changed by creating new cross sections and is not affected by the frame. The metal cross sections were secured to the frame, ensuring to mark the centerline on the frame first and lining them with the centerline on each section as shown in Figure 14. Figure 14: Cross sections being mounted to the mold frame Spacers composed of long threaded rods, couplers, washers, and nuts were placed so they connected all the sections and could be adjusted for even spacing. Next, small 90 degree bends were made in strips of aluminum to create angle brackets and were attached to the top of each cross section for the purpose of securing the sheet metal that would be placed inside later. To create a template for the inside mold, paper was placed inside the frame in sections and carefully smoothed to mimic the shape of the canoe. Then it was traced and cut, which was then used to cut the sheet metal to create templates. This year, we received new rolling equipment that could easily bend sheet metal. This lead to more accurate and smoother metal sections, ultimately speeding up the construction of the canoe mold. The sheet metal then had to be placed in the mold, riveted together, and bent 90 degrees at top to secure it to the angle brackets created earlier as shown in Figure 15. The sheets fit together by using a machine to create a groove in some of the sections. Once all of the
Tennessee%20Technological%20University%202015%20Design%20Paper.docx