http://img,villagephotos.com/p/2006-9/1211078/JTIUR-picture%20023.jpghi ,i found these 2 ulsters with a bunch of knives i bought,they look almost identical,but the stamps are different sizes,i think these were from the early 70s,and my question is since their both i think delrin,not celluloid why did the bottom ones handle shrink,their both unused but the bottom one is a little grimy and needs a good cleaning, and are these boy scout knives or just regular'camp' knives thanks.http://img.villagephotos.com/p/2006-9/1211078/jtiur-picture%20023.jpg
ulster questions
- Thread starter tthman
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Codger_64
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Many different plastics were tried before Delrin came on the market in circa 1960. And cheaper plastics on the order of styrene were still used afterward on inexpensive knives. I can't see the tang stamps, but the can openers are both post 1945. I believe this is their #114 general utility knife. Exposure to sunlight and/or heat is one of the things that can cause plastics to shrink and distort. Delrin has a much higher heat resistance. Celluloid was not the only plastic used before Delrin.
Michael
Michael