Seedling Shells

BenefitsDeep, consistent root growthThe ribbed sides and taper encourage downward and perpendicular root structure instead of balling or clumping.An open bottom air-prunes roots to further avoid balling or clumping.Separating shell-halves allow full access to seedling, no digging or prying required. Root shock is eliminated.Watering by dunking saturates entire column of soil while preventing anaerobic environment of constant bottom-watering. Rugged and durable, should last years.PrintingPrinting six seedling shells (three pairs) and a tray provides nine cells to sow.This is an outside application, so it's probably best to print in PETG to avoid warping. No warping present during a hot Texas summer. If you're in a cool environment, you might get away with PLA.Low infill, 10-15% works fine since this are mostly walls and aren't under heavy load.I found it helpful to print two shells at once, oriented parallel with the Y-axis if you're using a bed-slinger, with a brim.Sowi