Real threads
2, 3 or 4 mm pitch, 60° profile.
Screw-top jar to 3D print
Generate a jar with a real screw-on lid, in any diameter and height, with adjustable clearance and a grip on the lid. Prints without supports. Free and online.
- Free
- No sign-up
- STL and 3MF
- Millimeter precise
- Runs in the browser
About the screw-top jar generator
Screw-top jars keep spices, screws, herbs, seeds and beads without opening by themselves. This generator makes real threads (60° profile) on the neck and inside the lid, with the clearance you choose.
The inside rises at 45° to the mouth, so the jar prints without supports. The lid prints top-down and has ridges around it for grip.
What you can adjust
Adjustable clearance
0.2 to 0.8 mm so the thread turns smoothly.
No supports
The inside rises at 45° to the neck.
Grippy lid
Ridges around the lid (optional).
Two colors
Jar and lid as separate parts.
Ideas for use
- Spices and herbs
- Screws, nuts and small parts
- Beads and craft supplies
- Seeds and grains
- Time capsules and gifts
How it works
- Choose the diameter, height and thread pitch.
- Click "Create in the editor": jar and lid open ready.
- Print both parts as they are and screw them together.
How to print
- Material
- PLA or PETG
- Layer height
- 0.16 to 0.2 mm
- Walls
- 3 perimeters
- Infill
- 15%
- Supports
- Not needed
- 0.16 mm layers make smoother threads.
- If the lid binds, increase the clearance to 0.5–0.6 mm.
- A 3 mm pitch is a good balance between grip and quick opening.
FAQ
The lid will not screw on. What can I do?
Increase the clearance (0.5–0.6 mm) and check that the first layer is not squished (elephant foot), which narrows the lid thread.
Is it food safe?
Printed plastic has gaps between layers where dirt can stay. For food, use PETG and prefer dry goods, or a bag inside.
Is it liquid-tight?
Not fully. For liquids, add an O-ring on the neck or thread seal tape.
Is it free?
Yes. The maker and the editor are free and run in your browser. Without an account, the project is kept for 48 hours; with a free account, it is kept in your account.
Which format do I download?
3MF (recommended: keeps colors and opens directly in Bambu Studio, OrcaSlicer and Creality Print), STL or OBJ, always in millimeters.
Create your screw-top jar now ↑
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