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 option to add a slot if you need a lid for a money jar. The threads have a smooth, circular profile. You'll likely want to flip the parts 180 degrees so the threaded side is facing up. Printing the first layer in concentric mode creates a visually appealing effect. Using 3D printed parts with food can be problematic, especially if your filament contains toxic materials like ABS. If you plan to use the lids for storing food, do some research beforehand. [Info on food-safe 3D printing from All3DP](https://all3dp.com/1/food-safe-3d-printing-abs-pla-food-safe-filament/)