This is a remix of [https://www.thingiverse.com/thing:1812854](https://www.thingiverse.com/thing:1812854)

The hinges have been changed to snap on, without requiring a separate metal pin.

A bobbin size chart is included for common styles, to make customising easy by simply choosing from one of the following styles in the table (or "custom" and edit values in the table):

• Singer-163131
• Singer-8228
• Bernina-0115367000
• Bernina 8-Series
• JUKI
• VIKING
• Class 15
• Class 15
• Class 66
• L-Style
• M-Style

I have included a pre-rendered a version of each of the styles above, ready to print.

Hints:

• For pieces to fit well, I recommend calibrating your printer's E-Steps and Flow (tutorials are easily found on YouTube)
• To make sure, print a test before the entire thing - simply bring the STL into your slicer software (eg Cura) then drag it down below the print plate, so just the hinge section prints. This allows you to test how well that clicks together, and how smooth it turns and catches, before printing the entire thing.

Print Settings

This prints very well without any supports. If the corners tend to curl up on your printer... may want to add a brim.

Also, I did a test print first, by lowering the model in Cura so just the hinges print. That is a good way to save time and filament, if you need to make any adjustments.

Post-Printing

Once it is printed, just hold the lid over the base, and push gently but firmly so that the hinge sections snap together.