Hello! I am an operations manager at a ceramic company called MudLOVE. We make a lot of different ceramic pieces. We have several potters on site each day. One of our potters insists on sanding his wooden potter's rib every 14 mugs he makes. He has 5 ribs and spends 10-20 minutes each day sanding the ribs. He insists it is absolutely necessary. Our other potters do not do this. One uses a metal rib and another uses hard plastic. Is this standard practice for potters? Do they sand ribs THAT frequently?