2-Way Film Slitter

thingiverse

This is a two-format film slitter for converting 120 film (any emulsion) to 127 plus a strip compatible with Minolta 16, or three Minolta 16 strips. Intended to be temporarily set on the film rails in a 6x9 cm folding camera, film threaded through, and the camera's film transport used (in a darkroom or changing bag) to roll the film through the slitter. Once slit, the film must be respooled to a 127 spool, or loaded into a Minolta 16 (or other non-perf compatible) cassette. Pockets are provided for small neodymium magnets to hold parts together, holes for screws to hold #11 (X-acto type) blades, and fillets to minimize film drag. Recommended to install a piece of soft felt or velvet on the base unit, to prevent scratching the emulsion side of the film. Update: I've updated the files to correct a missing set of magnet pockets on the lower side of the 127 blade plate, and to adjust the sizes of the pockets to match the magnets I bought for my own print of this Thing. https://smile.amazon.com/gp/product/B08LF11XBN/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 Second Update: I've replaced the blade plate files due to a bug in FreeCAD diameter constraint -- the dialog asks for diameter of a circle, but then uses the entry value as radius. This obviously produced holes that were double the correct size -- 6.4 mm instead of 3.2 mm. If you've printed the oversize one, it should be possible to make sleeve inserts to allow use of M3 screws (which will fit through the slot in a #11 blade).