21st Century 3D Printed Giant Crossbow
grabcad
In a last-minute decision to join a competition, I planned to create an innovative Giant Crossbow with minimal parts and press fit assembly. The design would require no additional components and could be printed on a Makerbot Replicator using PLA material. Due to the hardness of PLA, the bows are designed longer for equal stress distribution. With only 8 parts including a ball, I haven't had access to a 3D printer recently but have experience with Dimension SST 1200ES printers in my previous company. Despite uncertainty about the bow's strength at full 80mm pull back, my instinct tells me it has potential for success.
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