I know it wasn't smart but... the water in my shop container was frozen and I was cold and rushed to sharpen two chisels. I poured the little melted ice water I had into the Tormek tray and proceeded to sharpen. The rough grinding seemed to go OK. However, when I used the grader to smooth the stone, it quickly wore a dish into the stone grader. So... NOW I went back to the house, got "liquid" water and filled the tray to the proper level. How can I flatten my grader? Or, do I need to buy a new one? Signed, lazydumbguy