Model at a glance
Dimensions
37.6 x 40.0 x 10.7 mm
Files included
STL + GCODE
License
CC0 — public domain
Views at publication
0
The Chrome dino is public domain now — 3D Print Pick (June 10)
A CC0 pixel-art T-Rex keychain uploaded today — no license fee, no attribution, ~15–30 min per print, ~96% gross margin at $6 retail.
Uploaded this morning to Cults3D: a pixel-art T-Rex keychain under CC0 — full public domain, no attribution clause, no per-unit fee, no subscription. Print it, sell it, repeat. That's the whole deal.
What it is
Dino-404-llavero is a flat, pixel-art T-Rex keychain modeled on the Chrome browser's offline dinosaur — the little sprite that pops up when your internet dies. Designer williamfierro published it on Cults3D on June 10, 2026 at 10:41 UTC. 1
The model ships as two files:
Dino404.stl (37.6 x 40.0 x 10.7 mm) and Dino404.gcode — the pre-sliced GCODE confirms the designer ran a print before uploading. 1 It's fresh — 4 views, 0 downloads as of this morning — so you're in before any saturation hits.正在加载统计卡片…
License & commercial path
CC0 (Creative Commons Zero / Public Domain Dedication). No attribution required. No commercial-use fee. No Patreon subscription. No Cults CU gate. You own zero obligations from the moment you download. 1
One nuance worth flagging: the pixel T-Rex is Google's offline game sprite. The CC0 applies to this particular 3D interpretation — it's a transformative work, and pixel-art keychains of this character have sold on Etsy for years without incident. Risk is low, but not zero if you're selling at scale to corporate buyers.
Print settings
The listing page has no documented settings — designer only wrote the model name. These are estimated from the geometry (flat, no overhangs):
| Setting | Recommended |
|---|---|
| Layer height | 0.2 mm |
| Infill | 15–20% |
| Supports | None needed |
| Bed adhesion | Standard — first layer on PEI or glass |
| Material | PLA or PLA+ |
The included GCODE implies a successful test print but doesn't document the slicer parameters. Run your own first print before batching.
Filament suggestion
PLA or PLA+ in any color. The pixel-art shape reads clearly regardless of color, so lean into audience preferences:
- Gray or black — closest to the original Chrome sprite; easiest to photograph on white backgrounds
- Neon green or lime — hits the retro/geek aesthetic, stands out in Etsy photos
- Glow-in-the-dark PLA — strong gift angle, especially for kids and gamers
No brand requirement. Any standard 1.75 mm PLA at 200–210°C nozzle / 60°C bed will work.
Print time & difficulty
~15–30 minutes per unit at standard 0.2 mm layer height on a typical FDM printer. The model is 10.7 mm thick and roughly 38 x 40 mm — it's small. Beginner level. No assembly, no post-processing beyond pulling it off the bed and optionally adding a keyring.
Batch efficiency is the real story: fit 8–12 units per plate on a 220x220 mm bed and you're doing a batch in under 4 hours. At $5 each, that's $40–60 per plate run.
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The sell
Who buys this: Geeks, Chrome power users, developers, gamers, parents buying gifts for kids who play browser games, anyone who's seen that offline dinosaur screen more than once — which is essentially everyone with a laptop.
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Estimated margin at $6 retail:
- Filament cost: ~$0.05–$0.10 (3–5g PLA, ~$20/kg)
- Print time: ~20 min (electricity + machine wear: ~$0.10)
- Keyring hardware: ~$0.05
- Gross margin: ~$5.75 per unit (~96%)
That's keychain economics. The unit economics improve further in batches.
Get it
Download the STL + GCODE directly at: cults3d.com/en/3d-model/gadget/dino-404-llavero 1
Free download. No account required to access the file (Cults3D allows guest downloads on free models).
Cover image: photo from the Cults3D listing by williamfierro, licensed CC0
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