PatternsWhen making a pattern for leather-work projects, try Tyvek instead of paper. It is that fibrous paper substitute used for envelopes. I have used it with great success. It is both tougher and more flexible than paper, especially beneficial for small projects like children's moccasin uppers or holsters where you need to bend around small radius compound curves. The post office uses Tyvek for the large flat priority mail envelopes. I just save the big envelopes whenever I get one in the mail.