Screws on to bottle like a bottle cap and ensures that the water drips at a controlled rate. To attach to the next bottle, thread zip ties through the four holes. Fits 3/4-inch tubing (if you’re using tubing to transport the water to the plants).
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TIPS (for MakerBot printers)
-Low quality; 2 shells; 10% infill
Tested on MakerBot Replicator 2 and 2x