Toy Tugboat

thingiverse

This is a toy tugboat crafted by me for a friend's little one. Instructions I used 4 shells, making every effort to seal it tight. The boat needed an 80% fill rate - it took forever to print, but that extra weight allows it to float perfectly upright. You can try a lower fill ratio, I haven't experimented with it. 0.3mm is my preferred layer height setting. No supports were needed.