Threaded Jar Lid
Replacement screw lids for any jar
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About this generator
Lost the lid of a good jar? Measure its thread and print a new one, with a label on top if you like.
How to use
- Measure the outside diameter over the jar's thread ridges.
- Measure the distance between two ridges (the pitch).
- Set the lid depth to cover the thread.
- Print as exported, top down.
Printing tips
- PETG is food-safe in many brands and handles dishwashers better than PLA.
- Add a silicone or rubber ring inside for an airtight seal.
- If it is too tight, raise the clearance by 0.1 mm.
Helpful guides
Frequently asked questions
How do I measure the pitch?
Lay a ruler along the side of the jar and count the ridges over 20 mm. Pitch = 20 / number of ridges.
Is it airtight?
Printed threads are not airtight on their own. Add a seal ring cut from a silicone sheet.
The lid is too tight.
Raise Thread clearance by 0.1 mm and print again.
