Viewmaster reel blank

This is a template for a viewmaster stereo viewer.

Print with a .12mm layer height so that 3 layers get printed.

The insets for the slides are 11.5mm x 15mm which is what you'll need to cut the slides down to. Place them across from each other in pairs inside the inset, then glue the top on.

Alignment of the images is necessarily precise. Even .5mm out may be too much for your eyes to put the images together. Both trimming the slide and mounting need under .5mm precision.