Use in combination with outer clip to fasten the bottles together. Allows you to adjust the distance between the bottles. Alternative to zip ties.
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TIPS (using MakerBot printers):
-Low quality; 0.2 mm; 2 shells; 10% infill
-Add multiple "3Dponics inner clips" on build platform and use "raft" setting.
Tested on MakerBot, Ultimaker and Formlabs printers.