Different sized trays for the Lanksy Sharpening system hones. Trays range from 3 slots to 9. The serrated tray only has two slots as there are only two that are part of this system.
No special printing instructions needed, print with whatever makes you happy. I used .2 layer height, 2 walls made the vertical pieces solid. Eryone Matte Olive Green PLA.
The author remixed this model.
I took this idea and created multiple sized holders, including for the hones made for serrated blades.