At work I cut a lot of cardboard boxes and I keep running into a very thick glue at the end of the day. I scratched my Delica up pretty bad by using a scotch bride pad to get it off. I have tried different methods but have not had the best luck. Tonight I sprayed my barrage with some vegetable oil and let it soak. Absolutely spotless when I checked it and I was happy I don't have to scratch this one. Anyone have issues/solutions like this? I would like to hear more ways to keeps blades clean.