Bobbin for Gritzner Tipmatic 1037 Sewingmachine / Unterfadenspule

Bobbins for sewing machines are far to expensive if you own a 3D-printer and have the opportunity to make them by yourself.

And as if the price is not deterrent enough there are countless different models of those bobbins even within one brand. Bobbins may even differ between models. 

My wife is an upcoming sewing professional and ran out of bobbins. She did not have to ask me twice to make her new bobbins. Another good opportunity not to miss to show her the investments for my Prusa 3D-Printer are worth the money.

Updated, improved Version 2 (8/2025)
This new version has better stability and is a snap fit. If both parts are aligned properly (see below) and pressed together they form a unit without a gap and don’t come of anymore. No glue needed. The new groove-rim design guaranties a strong but seamless tight fit. The walls are a bit stronger now as well.
See the new V2 Version 3D visual here (link) 

To print use PETG with 4 or more perimeters. This is a solid model so infill doesn’t matter. 

I designed all models in Shapr3D (which is -by the way - becoming better with each of the frequent updates). To print the bobbin the flat outsides of both parts should be placed on the print bed like this:

Both parts snap together tightly. To assure that the smal slots in part 1 align with the slots on part 2 there is a small nozzle on part1 that corresponds to the notch on part2. 

Take care that you press the parts all the way together firmly enough so that the inner ring (part1) is flush with the outside of the outside of part2. When you put the parts together there is a „click“ at the end that indicates they are completely inserted. Once put together they do not come apart again. You don’t need any glue.

This is how the bobbin should look if put together correctly.

And this is how the completed bobbin sits on the sewingmachine when respooling the thread to a new bobbin.

I printed them with Prusament PETG Clear with 0,4mm nozzle and 0,20mm layer hight - pretty standard and 20% gyroid infill. No support, no brim needed.
PRINTING time is approximately 10 minutes for one bobbin. 

If you need plenty of those bobbins I prepared a printfile with 10 bobbins (10x part1 and 10x part2) on the print bed. 

If you want a more transparent Bobbin (with transparent PETG- see pictures)) you may use the “CLEAR”-3mf Files. There I edited the print settings sp that the layers are aligned und clear. Printing the CLEAR variant takes significantly longer. Instead 10 minutes for one bobbin it will take 30 minutes to print these CLEAR models.
 

Please show me your results and send me fotos of your makes. I like to see how you use this model. If you have ideas for improvement don’t hesitate to send them to me in the comments.   I will try to incorporate your suggestions and will modify the model for special needs if you ask me to do so. 
And of course a like ♥ or a rating ⭐ of the design are always welcome. 

happy printing, clamikra