35mm and Medium Format Film Carriers for DSLR Scanning

These are 35mm and medium format film carriers which are designed to be very simple but still highly functional. They use a double S-curve design to keep the film flat and have a small film-to-light distance (35mm: 2.8mm, medium format: 3.8mm) to minimize vignetting. Both film carriers feature removable masks that snap into the back of the carrier to block stray light from reaching the camera. Medium format masks are available in all common sizes, and the film carrier exposes enough area to scan 6x9 negatives when no mask is installed. The double S-curve design is optimized for scanning full rolls or cut pieces >150mm in length; scanning shorter pieces may be difficult especially if the film is curled across its width. The base of the each carrier prints in two identical pieces which feature tapered locating posts to ensure that they will always align perfectly once assembled. 

Originally designed for use with my narrowband light source for scanning color negative film but suitable to use with any light source. 

Print with 0.2mm layer height in any material with supports enabled on build plate only. Use black filament for best optical performance. Assembly requires two M2x10mm pan head self-tapping screws. The holes can also be drilled out to allow the use of M2.5 or M3 screws.