3D printing small plastic hardware parts for small boats is getting easier and easier. Today we tested a 3d printed stopper ball using just PLA plastic and the results were surprising. We're confident this would outlast the useful life of the line.
These small stopper balls are most often used for marking control lines like differentiating between a downhaul and and reef line for example.
We're making these available in 4 colors on our website now.
https://bandbyachtdesigns.com/stopperball