Automatic Floating Fish Tank Feeder Ring V2

Updated to V2 on 11/8:

During a month-long testing process, it was discovered that due to the tiny pores in the 3D printed model, water gradually seeped into the hollow part of the model when submerged for extended periods, causing the ring to sink below the water surface and lose its function as a feeding ring.

The model has been redesigned, with grooves added to the bottom. This allows you to use packaging pearl cotton or foam boxes from other items, cut into strips about 6mm wide, and insert them into the grooves to increase buoyancy. (In the picture, I used an existing window seal from home.) This ensures that the model will stay afloat even after prolonged immersion.

The profile shows the use of a 0.2 nozzle because I had just finished printing another model and was too lazy to change the nozzle. In normal use, a 0.4 nozzle and 0.2 layer height are sufficient, and the model requires no supports.

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The previous feeding ring had a too small inner diameter, causing the small fish to crowd together. Furthermore, long-term use led to the accumulation of various molds and scales, affecting the aesthetics.

Therefore, a new design was printed, utilizing the low-fill hollow space inside the model to allow the feeding ring to float on the water surface. The integral movable joints allow the ring to automatically move up and down with the water level.

The profile has been configured with the appropriate wall thickness, infill, and supports. Please do not modify it easily.

The effect is very good. I used transparent PETG, but you can also print using various materials of your choice, such as PLA. The tolerance of the movable joints is compatible with both materials.

The hook is compatible with fish tanks with glass thicknesses up to 8.5mm.