Long bobbin case for vintage sewing machine shuttle bobbins

This is a case for storing long bobbins for vintage Singer sewing machines, such as models 27, 28, 127 and 128. It might work for other machines too.

The number of bobbins can be customised between 6 and 12, source provided for possible improvements. Additionally, a 7 bobbin STL file has been included.

Due to popularity, I have updated this design to version 2. It now has hinges and the open end is easier to grip to pull it open.

Print the two halves. To help fit the hinges, cut a taper