Stylish, small, and cost effective was the main goal of these 22mm and 30mm Tank/RDA stands. They keep your Tank/RDA upright for display, organization, or storage purposes so the nasty leak that occurs from juice buildup, doesn't leave sticky little rings all over your table as well as keeping that ever so fragile glass on tanks nice and unbroken. The 510 hole is just large enough to fit a 510 without screwing but not so large that they would fall off when picking up the RDA or tank.
Print time at 15-20% is about 10-15mins.
24 of these stands takes about 3 1/2 hours.
Below 15% infill causes top to sag when finishing the top layers especially with hex-comb fill pattern.