Test Tube Drying Rack
thingiverse
Test Tube Drying Rack: A Must-Have for Aquarium Enthusiasts. I exclusively use mine for test tubes in conjunction with my aquarium setup. It accommodates Hanna checker vials, Red Sea containers, and more. Printing is a breeze - just keep in mind that you'll need nine support sticks to get it right. To ensure smooth printing, I highly recommend applying a brim to the sticks.
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