3D printable Christmas ornaments: STL guide 2026

Christmas ornaments are the friendliest thing you can put on a 3D printer. They are small, they print in under an hour, a failed one costs a few grams of filament, and a tree full of them looks like a project rather than a purchase. They also fail in their own specific ways: hanging loops that snap, snowflakes that peel off the bed, stars that sag, and gold silk filament that hides every detail you paid for. This guide is about getting ornaments right, from the file to the hook.

If you are new to buying print files at all, start with our general guide Buying STL files for 3D printing: what to check. It covers archive contents, scale and supports for any model. Here we only cover what is specific to decorations.

What the shelf on Getly looks like

We read the 3D Printing Models category on Getly, measured October 2026. It holds 106 active listings at a median price of $4.00, and the middle half of the shelf sits at exactly that price. One honest caution: a single shop holds 91.5% of the shelf, so the shares below mostly describe one seller's template. That template is careful: 86.8% of listings state a layer height, 75.5% state an infill, 82.1% say outright that no supports are needed and 77.4% are designed for two colours.

What the shelf does not have yet is a dedicated Christmas ornament. The closest pieces are star shapes: an interlocking 8-point star that assembles without glue, which works as a hanging decoration or a table piece, and two-colour star trivets with 12 points and 10 points for the holiday table. If you design ornaments, that gap is worth knowing about (more at the end).

STL or 3MF for ornaments

On this shelf 101 of 106 listings deliver a zip archive, four ship loose STL files and one ships a 3MF. Inside the zip you will usually find STL files, and that is fine for single-colour ornaments. The difference matters for two-colour work:

• STL stores geometry only. A two-colour ornament comes as two STL files (base and inlay, or body and lettering) that you load together and assign to two extruders, or one file you print with a colour change at a set height.
• 3MF can store both parts already aligned, with colours and often the designer's slicer settings. If you have a multi-material printer, a 3MF saves you the alignment step.

Before you buy, check the listing says which way the colours are split: by layer (a pause and filament swap at a height the listing names) or by part (two bodies for a multi-material printer). The first works on any single-nozzle printer; the second needs an AMS-style system or a lot of patience.

PLA or PETG on a tree

PLA is the default, and 86.8% of listings on the shelf mention it. It prints easily, holds fine detail and comes in every festive colour, including silk and glitter blends. Its weakness is heat: PLA starts to soften around 55 to 60 °C. On a tree in a living room that is no problem. In a car, on a sunny windowsill or near a radiator or a fireplace mantel, thin ornaments can warp.

PETG (mentioned on 8.5% of listings) tolerates more heat and is less brittle, so an ornament that falls on a tiled floor is more likely to survive. It strings more and gives softer detail, so it suits simple, chunky shapes and outdoor decorations better than delicate snowflakes.

Two filament notes for the season. Silk PLA looks great on smooth baubles but blurs small text and fine filigree, so save it for simple shapes. Glow-in-the-dark filament is abrasive and wears a standard brass nozzle; use a hardened nozzle if you plan more than a few prints.

Print settings that suit ornaments

• Layer height. 0.2 mm for flat ornaments and simple shapes, 0.12 to 0.16 mm for anything with lettering, faces or curved surfaces you will look at up close.
• Walls. Three walls (perimeters) make small parts solid. Ornaments are mostly walls anyway.
• Infill. 10 to 15% is plenty. A heavier ornament pulls a branch down for no visual gain.
• First layer. Snowflakes and flat stars have thin arms and little bed contact. Clean the bed, slow the first layer down and add a brim if the tips lift.
• Hollow baubles. Some round ornaments are designed for vase mode (spiral, one wall, no top). They print fast and let light through, but they are fragile, so they suit the top of the tree, not the reach of a toddler.

Supports and the hanging loop

Most ornament designs print flat on the bed with no supports, and that is what you want: support marks on a decoration show. The one part to watch is the hanging loop. A 3D print is weakest between layers, so a loop printed standing up snaps along a layer line the first time someone tugs it. A loop that lies flat on the bed, with the layers running around it, holds.

Check three things about the hanger before you buy:

1. Is there one at all. Only 7.5% of listings on the shelf mention hanging, a loop or a hook, which is fine for trivets and planters but not for a tree ornament. If the preview shows no hole, you will be drilling one.
2. Hole size. At least 3 mm takes a standard ornament hook or thin ribbon. Smaller holes often close up slightly in printing.
3. Orientation. The preview or the print note should show the loop printed flat. If it stands up, ask the seller or print a test before you make twenty.

The licence if you sell what you print

Many people print ornaments to sell at school fairs, Christmas markets or online. The file licence decides whether that is allowed. A personal licence lets you print for your own home and for gifts. Selling the printed ornaments needs a commercial licence, and reselling or sharing the STL file itself is almost never allowed under either.

On this shelf the licence field is usually empty: 98 of 106 listings set no licence type, seven are marked commercial and one personal. Empty does not mean anything goes. Read the description and the licence text in the archive, and if neither says you may sell prints, message the seller before you buy and keep the reply.

A simple plan for a printed tree

• Pick one or two shapes and print them in two or three colours rather than ten different models. A repeated design looks deliberate.
• Print one test, hang it on a real branch, and check the weight and the loop.
• Batch the rest on one plate. Ten small ornaments print almost as fast as one large one.
• Start in November. Printers that run all December need nozzle changes and fresh filament at the worst moment.

If you design ornaments

The shelf gap is real: as measured today there is no ornament collection in the 3D Printing Models category. A set of hangable designs with a flat-printed loop, a stated hole size, a named layer height and a clear licence line would answer every question in this guide. On Getly there is no listing fee, sellers keep 80% of each sale (90% on sales from their own link), and every new listing is reviewed by hand, usually within a few hours. See how selling works.

Buyers pay by card, Apple Pay or Google Pay where available, or in USDT or USDC, and every purchase has a refund window of at least 30 days. Browse the full 3D Printing Models category.