My first design for 3D printing. I have a dish drying rack that had a bamboo block for holding knives as they dried. Eventually the moisture caused the block to break, so I printed a replacement. I added a stop on the back of the block so that it doesn't slide into the other utensil areas of the rack. If I were to modify it, I might make it a little thicker so it sits deeper in the tray. As is, it can start to tip out of the rack if you don't gently slide the knife in.