The knife rack in my own home is too dirty. I took the time to make a new one. I didn't add rounded corners to the printed one, but I added them to the model. The print file also had rounded corners. Both PLA and PETG can be used. You can choose whichever you prefer. The stability is very good. After printing, I just glued it with adhesive. I didn't want to bother with the buckles, which was too much trouble