Standing Bubble Letters A–Z, 0–9, & and ! — Printable Files (STL + 3MF)
$19.99
The whole bubble alphabet — A–Z, 0–9, & and ! — as STL and 3MF files, and every one of them stands up on its own!
Birthdays, nurseries, mantels, bookshelves, party tables, and every "wait, where did you get those?" in between.
You've seen the puffy bubble letters everywhere — but almost all of them are flat-backed and made to hang on a wall. Mine stand on their own. Set them on a shelf, mantel or dessert table and spell out a name, a birthday, a year or a little "HELLO" — no hooks, no nails, no stand.
✨ What makes my files different
🎈 They actually stand up. Every letter has a flat bottom edge it sits on, and I checked each one so it won't tip. A few (P, F, 4 and 7) have a tiny hidden foot so they stay put, even the ones that lean.
☁️ Really puffy. They're full, round balloon shapes on the front, not a flat letter with rounded edges. The holes are opened up a little so they stay clearly readable from across the room.
🖨️ No supports, ever. The back is flat, and every file is already lying face-up on the plate, so the whole puffy front prints on top. All 38 print without a single support.
📏 Every letter is exactly the same height. All 38 stand exactly 150 mm (5.9 in) tall, so any word you spell lines up perfectly on the shelf.
🎨 Finish them your way. There are no print settings saved in the files on purpose. Print them straight off the plate, turn on fuzzy skin for that soft fuzzy look, sand them smooth, clear coat, paint, or resin them — whatever you like.
What's in the download
- 38 characters: A–Z, 0–9, & and !, each its own file
- STL files for every slicer
- 3MF files of the same letters
- Start Here PDF with how to open, print and resize them
Everything comes in one zip file.
Size and print details
- Each letter stands 150 mm (5.9 in) tall and is about 4–6 cm (1.5–2.3 in) deep.
- Widths range from 55 mm for the ! to 200 mm for the W.
- Want them bigger or smaller? Scale them in your slicer. Use the same percentage on every letter so they stay matched (the Start Here PDF has a quick size chart).
- At full size they need a 256 × 256 mm bed (Bambu P2S, P1S, X1, A1 and similar).
- On an A1 mini or another 180 mm printer, 36 of the 38 fit as they are. Scale M and W to 88% or smaller, or scale the whole word to 88% (about 132 mm tall) to keep it matched.
- No supports · no glue · no assembly · one letter per file.
How to open them
In Bambu Studio or OrcaSlicer, drag the .3mf or .stl onto the plate (or use File → Import). In PrusaSlicer, Cura or any other slicer, import the .stl. Leave each letter the way it opens — face-up, flat back on the bed. That's what makes it print without supports.
License
Personal use only. Print as many as you like for yourself, your family and your friends, gifts included.
Selling what you print requires a commercial license. This download doesn't include one. If you'd like to sell prints of these letters, email support@3dprintedmom.com and ask before you sell any.
The files themselves can never be shared, resold, uploaded or given away, whether they're the originals or edited.
Instant download, yours forever
Files land in your inbox the moment you check out. Nothing ships and there's no waiting — print them tonight.
FAQ
Do I need a Bambu printer?
No. The STL prints on any FDM printer, and the 3MF opens in Bambu Studio, OrcaSlicer, PrusaSlicer and most other slicers.
Will it fit my printer?
At full size you need a 256 × 256 mm bed. On a 180 mm printer like the A1 mini, scale M and W down (88% fits), or scale the whole set.
Can I make them bigger or smaller?
Yes. Scale them in your slicer with proportions locked, and use the same percentage on every letter in a word.
Do they really stand up on their own?
Yes. Every letter has a flat bottom it stands on, and the few that would lean have a small built-in foot.
Are print settings included?
No, on purpose. Everyone finishes these differently (fuzzy skin, sanding, clear coat, resin, paint), so the settings are up to you.
Are there lowercase letters?
No. It's capital letters A–Z, plus the numbers 0–9, & and !.
Can I hang them on a wall?
They're designed to stand, but the back is flat, so a removable adhesive strip works if you'd rather hang them.
Can I sell what I print?
Not with this download. It's a personal use license. To sell prints you need a commercial license, so email support@3dprintedmom.com and ask.
Is this a physical product?
No, it's a digital download. You get the files, and nothing ships.