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Threaded Jar Generator

coarse multi-start threads: the lid opens in two-thirds of a turn ☕ Buy me a coffee

1 · Jar

2 · Thread

3 · Lid

4 · Files

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Axial section: the thread engagement

About the Threaded Jar Generator

A jar whose lid actually screws on: coarse multi-start threads that print without supports and open in two-thirds of a turn, like a real food jar.

Free and without an account: type the numbers, watch the live preview, download STL and 3MF files that Bambu Studio, OrcaSlicer and PrusaSlicer open directly. Looking for a ready-made size? The model library has 651 of them, each with its dimensions already filled in.

Printing notes

Questions

Do the threads really screw on?

Yes. The lid and the jar share a coarse multi-start thread that prints without supports and screws on in half a turn.

The lid is tight. What do I change?

Raise the thread clearance by 0.1 mm and regenerate. Printers vary a little in how much they swell threads.

Is it watertight?

With the optional seal washer printed in TPU it holds dry goods and keeps moisture out; it is not meant for liquids under pressure.

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