Sewing aid hump jumper 3mm, 4mm and 7mm (Hebamme)

This is loosely based on https://www.thingiverse.com/thing:2349048, but I didn't like the overall print quality. After I saw a similar, foldable sewing aid somewhere to buy I constructed this sewing aid with 3mm, 4mm and 7mm (folded) height. This model is completely redrawn and optimised for good printing quality (no sharp edges - can be used directly).

You can see here how this might be used:
https://www.youtube.com/watch?v=f2PAsPv6NW4
(Note: This is another model you could buy)

Haven't used this myself, but my wife tells me it does the job. ;-)