Using 10 lbs of discarded PLA and ABS filament, this instructable turns 3D printer waste into a vibrant koi pond mosaic. The author, Alex Green, shows how to transform everyday plastic scraps into a reusable art piece that adds color and texture to a backyard pond.

First, gather the filament and cut it into 1‑inch segments. Melt the pieces in a heat gun or small oven until they become pliable, then pour the molten plastic into silicone molds to create uniform tiles. Allow the tiles to cool completely before handling.

Arrange the cooled tiles on a waterproof mesh and apply a layer of marine‑grade epoxy to bond them together. Once the epoxy cures, the mosaic can be mounted on the pond wall, and a protective sealant is applied to shield the surface from water and UV exposure.

The project demonstrates sustainable DIY, turning waste into a functional art piece that beautifies any water feature. By reusing 3D printer filament, you reduce landfill load while creating a durable, eye‑catching mosaic that complements the natural flow of a koi pond.