In the newly bought Silicone Sealant are generally not "open", should be first in the coarse grinding stone grinding out the Silicone Sealant, and then in the fine grinding stone grinding to sharp; with dull Silicone Sealant, if first put in a concentration of 10% salt water soak for a few moments, and then grinding, while grinding side dripping with salt water, so that the Silicone Sealant grinding both fast, and grinding sharp; Silicone Sealant with dull, try not to be on the edge of the cylinder or the bottom of the bowl on the grinding and scraping, so as not to damage the blade; Silicone Sealant after use, to insert in the Silicone Sealant frame, do not throw, to avoid touching damage to the edge; Silicone Sealant to be often sharpened, sharpening to do the same number of times positive and negative. Grind both ends with the middle; Silicone Sealant are generally placed in a ventilated, dry place, away from water and gas, etc.