
Print-A-Kit | Monthly Science and Engineering Kits for 3D Printing
*100% satisfaction guaranteed*
3D Printable Science and Engineering Kits for All Ages.
Instant access to a revolving selection of educational 3D printable kits and learning resources each month.
Digital STL subscription for 3D-printer owners • 3–5 kits per month • Instant download • Cancel anytime.
100% 3D printable + optimized for easy 3D printing with pre-arranged build plates.

Print-A-Kit is the digital STEM kit subscription that turns your printer into a monthly hands-on science lab, because each drop includes 3–5 curated builds with STL files, step-by-step guides, and videos you can download instantly.
MORE THAN JUST STL FILES.
STL files, learning resources, and more.
How it works
- Download the STL files, pre-arranged build plates, and PDF instructions.
- 3D print, following the PDF build guides, and assemble with ease.
- Proudly display your 3D printed kits.
Download | 3D Print | Build | Learn
Print-A-Kit is a cool new kind of experience that is both easy, interactive, and fun for all ages. But what makes it better than your average science and engineering kits? First of all, you get to 3D print them yourself, which is more interactive and fun then just getting pre-made parts. Plus, you can choose what color to print the kits in to match your own unique style or preferences.
Print-A-Kit is perfect for all ages, whether you are retired and looking for something new to print, simply appreciate science and engineering, are just getting into 3D printing, or are looking for a family-friendly experience where you learn by doing. Print-A-Kit STL are thoroughly tested to make the whole experience seamless.
ACCESS NEW 3D PRINTABLE KITS EACH MONTH
Featured build: The world's most efficient trebuchet.
Build you own "Floating Arm Trebuchet" and discover how it actually works.
(One of our most popular kits)
Flexible Educational License:
Personal & Educational Use:
- Print for personal use, single classrooms, or homeschool groups
- Modify files for educational purposes only
Commercial Use:
- Rights to sell physical 3D printed kits only
- Limited to small-business owners and educators
- Examples: farmers markets, craft fairs, trade shows, educational events
- No modifications of STL files for commercial use
- Local, in-person sales only - no online selling
Ready-to-print simplicity. Pre-arranged plates and tested STLs reduce frustration. Just hit “print,” then assemble.
Each month brings a fresh batch of kits to keep the Print-A-Kit adventure lively and fun. With over three kits at different challenge levels, you get to pick the perfect fit for your 3D printing journey.
What Print-A-Kit users are saying:
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“A fun and accessible way to build, learn, and explore STEM concepts together with kids.”
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“Well-designed, easy-to-print kits that are versatile, educational, and engaging.”
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“A unique blend of creativity, hands-on building, and 3D printing that sparks curiosity.”
What's Included:
Each digital kit includes all the STL files needed to print the project, PDF guides with interesting facts and history, and exclusive build videos.
Parts neatly pack into stackable 3D printable boxes with custom labels.
*New box designs are now even more optimized for 3D printing. They’re stronger, stack more efficiently, and use roughly 30% less material.
Own a 3D printer? Get 3–5 printable STEM builds every month (STL + guides + videos). Instant download.
Peek Inside Some of Our Curated Build Experiences:

Floating Arm Trebuchet
Everything you need to build and explore this fascinating projectile-launching machine is included. Discover the mechanics behind one of history’s most powerful siege engines while assembling it yourself. Perfect for learning, experimenting, and having fun with physics and engineering. All parts pack neatly into the compact and portable Print-A-Kit box, ready for your next launch anywhere.

Insanely High Gear Ratios
Experience the challenge of extreme mechanical advantage with this high gear ratio gearbox. With each turn, the final gear moves slowly as energy transfers through multiple stages. It's incredibly hard to spin fast by hand, which makes it even more satisfying to try. Test your strength, feel the torque, and explore real-world mechanics in action.

Single-Pallet Escapement
3D print this unique escapement mechanism and experience how mechanical clocks really work. Watch as the pendulum swings, the gears turn, and the escape wheel ticks forward one tooth at a time. This hands-on project lets you explore the inner workings of timekeeping with real moving parts. It even includes a fully 3D printable spring, so the entire mechanism runs without any extra hardware.
How It Works
1
Download
Explore our cool new kits every month. Select the ones that pique your interest the most.

2
3D Print
Every kit includes pre-sliced STL files to simplify the 3D printing process.

3
Build, Learn and Have Fun
Build your 3D printed creation with our detailed digital build guides and educational resources and videos!













Frequently Asked Questions
Return policy
Our mission is to have all customers fully satisfied with their purchase. If that's not the case, notify us, and we will make every effort to address any concerns.
How do I access my downloads?
To access your kits, click on your account icon and go to the downloads section. Every month, you can select from our curated collection of kits. Remember, any old kits from the previous month will be stored away in the vault
How many kits are there?
We are consistently expanding our range of kits across various categories. Currently, we offer approximately 15 kits and plan to introduce 3-5 new kits each month. Stay updated on our monthly releases!

Print-A-Kit Subscription
Science and engineering made fun for everyone. Don't let your 3D printer collect dust, subscribe and 3D print fun and engaging projects.
Print-a-Kit | Engineering made fun for everyone