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Origin
editTFA states "As the idea to use glass for producing, as the first-ever nail file made of glass, both appeared on the territory of Switzerland in 1936. Swedish nail file didn't find expected popularity."
So, is it Swiss or Swedish? And was Switzerland a territory in 1936? And who expected the popularity? 68.9.90.216 (talk) 14:25, 11 February 2014 (UTC)
Follow-up: "The abrasive surface of the Swiss nail file was formed by the means of laser engraving, thus they put cross-section fillets in two directions."
This is very doubtful that the Swiss had in 1936, given that the first LASER was demonstrated in 1960. 68.9.90.216 (talk) 14:30, 11 February 2014 (UTC)