Piaggio CIAO fuel tank cap

thingiverse

I recently misplaced my tank cap for my Piaggio CIAO, prompting me to design one using TPU material. Thankfully, no support structure was required. This print is suitable for an internal diameter of up to 36mm, down to 32mm for the larger model, and 30mm for the smaller version. However, I encountered a problem with TPU: it dissolves slightly in gasoline and swells. To address this issue, I created a modified design with a narrower end that can accommodate swelling. I also experimented with PLA, which proved to be successful! It doesn't swell like TPU but could potentially detach while driving.