In March, 3Demon Studio created a set of great-looking skins for the CORE One L, turning the printer into three very different things: a TARDIS, a dark steampunk machine, and a small mushroom forest scene. We liked the idea a lot. The CORE One printers have a clean, compact shape, and they feel like a perfect base for more decorations, add-ons, and mods – something that can take on a life of its own in the hands of the Printables community.
So we’re launching the CORE One Skins Contest!
Design a printable look for the CORE One+ or CORE One L: decorative covers, themed panels, magnetic accessories, frame add-ons, button covers, small props, or a full transformation of the printer into something completely different. It can be sci-fi, fantasy, industrial, cute, minimal, strange, practical, or something out of this world.
Fairy forest mushrooms to be assembled
To make modeling easier, whether you already have the printer at home or not, you can use the CORE One and CORE One L CAD files released under our new Open Community License 1.0. Simply load the files into your preferred 3D modeling software and build around the printer model!
We have just one important rule: make sure the design does not limit the printer’s functionality. The door must still open properly, controls should remain accessible, and nothing should interfere with printing or ventilation. Take the CORE One and give it a character others can print, remix, and build on.
Take a look at the amazing skins by 3Demon:
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 Mushroom Cover for Prusa Core One L |
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Prizes
First place
The first-place winner will unwrap a brand new Prusa CORE One+ kit!
Second place
Second place will be rewarded with 1750 Prusameters – which is enough for grabbing
5 spools of Prusament or choosing from other selected products including Prusa Merch!
Third place
For third place, you’ll get 1400 Prusameters , perfect for picking out 4 spools of Prusament or exploring other options from the rewards section.
Representative images of what you can exchange your Prusameters prize for.
Starring: Mikoláš Zuza & Pepa’s head
Community’s Picks
As always, you all have a chance to help award some prizes too. We want to see your makes of submitted designs. Five entries with the most makes (who are not also main prize winners or honorary mentioned) will each receive 500 Prusameters.
Judging Criteria:
- The overall quality of the model.
- Printability – Whether the model has an optimal orientation, whether it is divided into multiple parts so it can be printed more easily (without supports) etc.
- Originality – If you create something truly unique, it will be rated better than a slightly altered existing model.
- Popularity – Share your model to increase its popularity and prove that users appreciate such a model.
- Your other works – In case we can’t decide between two favorite designs, we often check your other models to see what you can do.
- Assembly instructions – If your model consists of multiple parts, we check how easy it is to assemble the final product.
- Photo quality – Well-lit, in-focus, and clear photos help show off your work and help us pick the best designs. For tips, check out our Basics of Product Photography course!
How to participate?
It’s easy to participate in this competition. Just follow these simple instructions.
- Design and create a model or improve an already existing one (“remix”) so that the result fits the theme of this contest. The model has to be printable on an FFF/FDM or SLA 3D printer (any manufacturer and model). This also means that you don’t need to own a 3D printer to participate. When creating the model, keep in mind the pros and cons of various types of 3D printing technologies and what can and can’t be actually done.
- Upload the model to Printables.com and make sure it contains:
- Model in .3MF or .STL file format (print files are optional)
- Photo or render of the model (ideally both)
- Model description
- Add the model to the contest. You will find the new competition button just below the download button on the print’s page after you publish your print. Click the Compete medal and select the “CORE One skins” contest. After that, your print will be shown on the contest page and you will be in the running.
Of course, you can share your model on social networks (Facebook, Instagram, X, Pinterest,…), and don’t forget to add @printablescom. This can help increase the popularity of the model.
Terms and conditions
- The contest runs from May 14, 2026, to June 14, 2026.
- You can submit up to 5 unique models to the competition and increase your chances of winning.
- Models submitted to the contest must be models that have been uploaded on or after March 01, 2026.
- The model must contain at least one printed part.
- By entering the contest, you agree to keep your model posted to Printables.com for a minimum of one year. The Prusa team reserves the right to repost your design if it is removed before the end of that year.
- AI-generated models are not allowed. Please submit only designs you created yourself.
- You must be the original creator of the model you upload. Please do not repost other people’s models from other sites.
- We reserve the right to terminate the competition or change the conditions of the competition at any time. In case of violation of the terms and conditions or attempted fraud, the competitor will be disqualified.
- Submitting entries that do not fit the contest criteria will result in disqualification, and repeated offenses may disqualify you from future contests.
- Results are at the judge’s discretion, and all results are final.
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