Mason Jar Lids, OpenSCAD

thingiverse

This provides STL files for large and small mouth USA-standard home canning jars. The OpenSCAD file canning_jar_lids.scad includes the provision for adding a slot in case you need a lid for a money jar. The threads have a smooth circular profile. You'll probably want to flip the parts 180 degrees so the threaded side is facing up. I like the effect when the first layer is printed in concentric mode. From what I've read, it's generally not the best idea to use 3D printed parts for contact with food, especially if your filament is of a relatively toxic material like ABS. If you intend to use the lids for storing food, then you might first want to do a little research. [Info on food safe 3D printing from All3DP](https://all3dp.com/1/food-safe-3d-printing-abs-pla-food-safe-filament/)