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Last update on 2022-06-27 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API
Safety first: you need safety glasses, hard hats, face masks & shields, safety shoes, vest, and gloves. You need to be protected from sparks and metal shavings. You can sharpen the edge of the blade by using a 10-inch file or grindstone, keeping the file at roughly a 45-degree angle. It is best to sharpen from the top side of the blade's cutting edge. Push the file in one direction along the blade till you get the rest of the blade.