Retractable RC plane bungee hook - print in place

thingiverse

This is a retractable hook for aircraft of approximately 1.5 meters in span that land on their bellies without retracts, designed to enable bungee launch. The hook prints in place with print quality below 0.2mm. I achieved strong and fine prints using a 0.16mm height layer setting. Please note that the pictured hook is damaged at its end. I revised the design after this failure, however, the quality of your first layer must be sufficient to support the small extremity of the hook before it connects with the rest of the part. This creates a small hole to aid in releasing the hook on the flying field. For improved adherence when printing, I recommend using spray glue if necessary. For a more straightforward hook design, please refer to this alternative: https://www.thingiverse.com/thing:3737792