This is a key chain photo frame. the photo size should be 25x25mm in dimensions to fit it to the frame as well as leave 1.5mm all the white gap all the side of picture.
Use corel draw for better results or photoshop.
This design includes to replace the photos inside the frame. Replacement can be done earlier 3-4 times. But the design is now managed to get higher replacement in nos.
Thanks to all followers an in youtube, instagram, facebook & main thingiverse to encourage us to do more innovative works