The eraser is crepe that can be purchased from suppliers such as Lee Valley. Very effective cleaning the blades when scrolling. Save a few dollars and purchase a child's crepe sandal from a dollar store. Same material. The crepe is also very effective cleaning belt sanders, or any sandpaper extending the use. Just swipe the blade cleaning out dust build up when cutting. Do the same with belt/disc sanders, or any sandpaper. For lubriating the blades Lee Valley also carry tubes of beeswax. A tube will last years. A wax candle may do the same. Again just swipe a clean blade. You may find it'll extend the use of the blade and eliminate burning. The tube of beeswax and eraser has lasted me ten years and will probably last me another ten years. Hopefully this helps Don.