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Norwegian to English translations [PRO] Materials (Plastics, Ceramics, etc.) / bladesmithing / sheathmaking
Norwegian term or phrase:sponvinkel
In the description of files used for leatherworking (making a sheath for a knife), they use the terms "positiv sponvinkel" and "negativ sponvinkel" to describe the angles of the file's teeth. "Vinkel" is angle. What is "spon"?