(small) test tube stand (7 test tubes)
thingiverse
Test tube holder accommodates up to 7 small test tubes (diameter = 14.5 mm, height = 8.5 cm). Extremely secure fit! Fusion 360 file is included. It's one of the first designs I created with Fusion 360, so don't expect perfection in any aspect. I also designed multiple test tube holders, which can be found at: Version for 7 standard-sized tubes: https://www.thingiverse.com/thing:2719817 Version for 7 large tubes: https://www.thingiverse.com/thing:2460095 Version for a single large tube: https://www.thingiverse.com/thing:2460016 I also created a holder for round-bottom flasks, which can be found at: https://www.thingiverse.com/thing:2413613
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