Reusable, stackable Seed Tray in multiple sizes

Needed some reusable and rigid seetrays, so i made quickly made some out of really old PLA i wanted to finally get rid of…Added a hole in the bottom to easily push the plant out and some vents around the sides for roots and soil to breathe.Walls are at an angle to be able to stack the trays, so off-season they need less storage space.Sizes available are 35, 40, 45, 50, 55, 60mm for now.Pick the size you want, multiply it in the slicer and fill your plate. Printed mine in PLA without any issues. No supports, no brim, nothing fancy. Just the plain model.Print it, in whatever leftover you have at hand. I think there are no special material needs here. So far, it feels good and rigid. Hope it will last long!Let's see if the plants think of it the same.