Guide · Jar Studio

How to make a 3D-printed screw-top jar

Jar Studio makes a jar and a lid that screw together and print without supports. Set the size, pick a thread, wrap the jar in a pattern, add a label if you like, choose the colours and download STL or 3MF files for your slicer. It runs in your browser, and the simple patterns are free.

Free · ProUpdated

What can you make with Jar Studio?

Any round jar from 25–160 mm tall and 25–160 mm wide, with a lid that screws on flush. Makers use it for:

  • Spice jars of one size on a shelf, each in its own colour.
  • Small parts storage for screws, beads or SD cards.
  • A gift jar for tea or sweets with a textured lid.
  • A kitchen set labelled coffee, tea, sugar and salt, each with its icon.
  • A replacement lid for a jar printed earlier.

How do you design a jar, step by step?

Jar Studio walks you through five steps. Continue takes you to the next one, and you can click any step to go back. The jar beside the steps follows every change.

  1. 1. Size the jar

    Choose to make a jar with its lid, or only one of them. Pick a ready size from 0.5 to 2.5 litres, or the short Test jar, or set the height, the diameter and the wall yourself. The capacity, the inside and the opening under the fields follow as you change them.

    Jar Studio's Size step: what to make, the ready sizes, the height, diameter and wall, beside the jar in 3D.
    Step 1: the size and what the jar holds.
  2. 2. Pick the thread

    The pitch sets how far the lid travels per turn: a coarse pitch closes in fewer turns. The clearance is the gap between the threads; 0.1 to 0.3 mm suits most printers. The step shows how many turns the lid takes to close.

    The Thread step: pitch, clearance and thread height, with the turns to close, the thread length and its depth.
    Step 2: the thread and the fit.
  3. 3. Choose a pattern and a label

    Search the 40 patterns or let Surprise me pick one. Cut it into the wall or raise it, set its depth and fade it in at the ends. Further down, put your own SVG or picture over the pattern, or label the front with a word and an icon.

    The Pattern step: Surprise me, the pattern picker showing Swirls small, cut in, its depth and taper.
    Step 3: the jar's pattern, your artwork and the label.
  4. 4. Style the lid

    A small, medium or large lid stands taller above the same thread, so the turns to close stay the same. Give it a grip: ribs, tread, arrows, hexagons, a Greek key and more.

    The Lid step: the lid size, the grip picker and the grip's depth.
    Step 4: the lid's size and grip.
  5. 5. Colour and download

    Pick the jar's and the lid's colours. A 3MF keeps each part in its colour, on one plate or two; STL gives one file per part for any slicer. Downloads need a free NabiMakes account.

    The Download step: the jar's and the lid's colours, 3MF or STL, one plate or two, and Download · free.
    Step 5: colours and the file.

Which jars can you start from?

Each example opens in Jar Studio as a new design, beside your own. Change anything, then download it.

  • Small parts jar

    A short, wide jar for screws and beads, with a ribbed lid.

    • Ø 70 mm
    • 50 mm tall
    • Dashes
    • Free
    Open in Jar Studio
  • Labelled spice jar

    A slim jar with fine ribs and a word on the front.

    • Ø 50 mm
    • 90 mm tall
    • Label “Paprika”
    • Free
    Open in Jar Studio
  • One-litre kitchen jar

    A Greek key round a jar that holds a litre, with a medium lid.

    • 1 L
    • Ø 115 mm
    • Greek key
    • Two plates
    • Pro
    Open in Jar Studio
  • Thread test

    A 30 mm jar with its lid at the default diameter, to try the fit before the big print.

    • 30 mm tall
    • 0.2 mm clearance
    • Ribs
    • Free
    Open in Jar Studio

Print the parts as they download: the jar upright on its foot, the lid upside down on its top. Neither needs supports. The layer height is a starting point for your slicer; the thinnest wall is the one Jar Studio's printer checks hold each filament to.

FilamentLayer height to startThinnest wallSupportsNotes
PLA0.2 mm0.8 mmNoneThe easiest choice; keep it out of hot cars and dishwashers.
PETG0.2 mm0.8 mmNoneTougher and takes warm water; it strings more, so clean the thread before the first turn.

Tips for a jar that closes well

  • Print the Test jar first: it keeps the diameter and the thread, so the fit you get is the fit of the big jar.
  • Keep the first layer from squashing out: an elephant's foot narrows the lid's mouth, which prints on the bed.
  • A raised pattern needs some taper, or its first rows overhang.
  • Two plates print the lid after the jar on a printer with one filament, each in its colour.
  • Before you print, check it on the view's bar: Dimensions shows its size, Measure the distance between two points, Section cuts it open and Layers steps through it as your printer will.

What if the lid binds, rocks or will not start?

The lid binds before it closes
Raise the clearance by 0.1 mm in the Thread step and print the jar again: the clearance sets the jar's thread, so the lid you have fits the new jar.
The lid rocks on the thread
Lower the clearance by 0.1 mm and print the jar again, or print the outer walls more slowly in your slicer.
The lid will not start the thread
Trim the first layer's lip inside the lid, or lower the first layer's flow in your slicer.
Jar Studio says a part is wider than the bed
Pick a smaller diameter, or the printer you will really use in the checks. Two plates help only when the jar and the lid each fit but crowd one plate.

Is Jar Studio free?

Designing and previewing are free for everyone. Downloading needs a free account; a design that uses a Pro feature needs the one-time unlock, which covers every project.

  • Free

    Free
    • Every size, thread and lid size
    • A plain wall and 11 jar patterns, a plain lid and 4 grips
    • The label, the colours, one plate or two
    • 3MF and STL
  • Pro

    • All 40 jar patterns and 18 grips
    • Your own SVG or picture over the pattern
    • Surprise me

Every setting, with its range and default

Lengths are in millimetres. Jar Studio refuses values outside these ranges.

SettingRangeDefaultWhat it does
1 · Size
MakeJar and lid, jar, lidJar and lidWhich parts the download holds.
Height25–160 mm80 mmThe jar's height with its neck.
Diameter25–160 mm60 mmOutside, the jar and the lid alike.
Wall1.6–4 mm2 mmThe walls, the jar's floor and the lid's top.
2 · Thread
Pitch1–4 mm2.8 mmHow far the lid travels per turn.
Clearance0–1 mm0.1 mmThe gap between the threads' flanks.
Thread height10–16 mm10.4 mmThe lid's threaded part, its top included.
3 · Pattern
Pattern40 patterns or noneSwirls smallWraps the jar's wall; 11 are free.
Pattern styleCut in, raisedCut inCut into the wall, tops flush, or standing out.
Depth0.6–1.2 mm0.8 mmHow far it is cut in or raised.
Taper0–40 %20 %Fades the pattern in at the top and the bottom.
3 · Your artwork (Pro)
ArtworkSVG, PNG or JPEGNoneYour own outlines over the pattern, up to 20,000 points.
LayoutOnce, around, tiledOnceOnce on the front, copies round the jar, or a tiled field.
Size2–500 mmFitted to the jarIts width on the wall; the height keeps its shape.
StyleCut in, raisedCut inCut into the wall or standing out.
Depth0.6–1.2 mm0.8 mmHow far it is cut in or raised.
Clear space0–5 mm1.5 mmHow far the pattern keeps from its outline.
Pattern insideOn, offOffThe wall's pattern shows in its holes and gaps.
Rotation−180–180°0°Turns it about its centre.
MirrorOn, offOffFlips it left to right.
Turn−180–180°0°, 180° with a labelWhere round the jar it sits, once or around.
Lift−100–100 %0 %How high on the wall it sits.
Copies2–36Fitted to the jarAround: how many copies.
Alternate0–30 mm0 mmAround: every other copy up, the others down.
Gap0–30 mmA quarter of its sizeTiled: the room between copies.
StaggerOn, offOnTiled: every other row shifted by half a copy.
ColourThe jar's or a filamentThe jar'sA colour of its own prints as a part of the jar.
3 · Label
LabelOn, offOffA word and an icon on the jar's front.
WordUp to 20 charactersCoffeeThe text on the label; quick words set a kitchen word with its icon.
Font8 bundled fontsDM Serif DisplayThe word's typeface.
IconNoto Emoji, or noneHot beverageAn icon beside the word.
FrameApothecary, oval, rounded, noneApothecaryThe panel's outline.
StyleRaised, cut inRaisedThe word, icon and frame stand out or are cut in.
Text size4–20 mm10 mmShrinks to fit a small jar.
ColourThe jar's or a filamentThe jar'sA colour of its own prints as a part of the jar.
4 · Lid
Lid sizeSmall, medium, largeSmallA crown above the same thread.
Grip18 grips or plainRibsThe lid's skirt; 4 grips are free.
Grip depth0.4–0.8 mm0.4 mmHow deep the grip is.
5 · Download
Jar colourThe filament coloursAmberThe jar's filament.
Lid colourThe filament coloursNavyThe lid's filament.
Format3MF, STL3MF3MF keeps the colours; STL suits any slicer.
PlatesOne, twoOneTwo print the lid after the jar on one filament.