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Ø Ring Card (Cassette)

This double o-ring card (ø ring) for cassettes is designed to be printed, folded, and glued from a single sheet of Letter paper (8.5″ x 11″ / 216 x 279 mm), the standard paper size for most printers. Although not difficult, cutting and assembling this ø-ring requires some care and crafting. The old advice of…