As was stated in the Health and Safety section, a sharp tool is a safe tool. This is because the tool will be doing what it was designed to do in the most efficient possible manner, with less force required by the user of the tool. This fact cannot be stated adamantly enough. When your tool becomes dull, stop using it and get it sharpened! No excuses. Your work wil progress much better with a sharp tool. You will definately work faster, better, and safer.