Print-A-Kit | 3D Printable Science and Engineering Kits for All Ages
Monthly 3D printable science and engineering kits for all ages.
Discover the world's coolest inventions with Print-A-Kit. The BEST way to learn REAL science and engineering. Stop 3D printing random trinkets and start learning with Print-A-Kit. Hands-on learning for all ages.
Instant access to more than 15 educational kits + exclusive limited time monthly and seasonal drops.
How it works:
Step 1: Download.
Step 2: 3D Print.
Step 3: Build and Learn.
Features:
- Fully 3D-printable science and engineering kits
- Great for parents, teachers, and lifelong learners
- Easy-to-follow build guides and PDF learning resources
- Engaging lessons and fun facts
- Easy to 3D print
- Satisfaction guaranteed
Topics Covered:
- Science: Plants and Animal Cells, Molecules, etc
- Mechanical Engineering: Gears, Springs, Cars, airplanes, etc
- Civil Engineering: Bridges, etc
...and more

Commercial License Included
Personal & Educational Use
- Print for personal use, classrooms, or homeschool
- Modify files for learning purposes
- Supports NGSS & ISTE-aligned learning
Commercial Use
- Sell physical printed kits (local, in-person only)
- Perfect for markets, fairs, and educational events
- No resale or modification of digital files
What Print-A-Kit users are saying:
“A fun and accessible way to build, learn, and explore STEM concepts together with kids.” - Mark W.
“Well-designed, easy-to-print kits that are versatile, educational, and engaging.” - Andrew M.
“A unique blend of creativity, hands-on building, and 3D printing that sparks curiosity.” - Sarah S.
Why choose Print-A-Kit versus freely available STL files online?
Print-A-Kit is a highly curated educationly experience with a wide range of science engineering projects that include detailed build guides, companion lessons and learning materials (in PDF format).
Satisfaction Guaranteed!
We offer a 100% satisfaction guarantee, free refunds, and one-on-one email support via info@3dprinteracademy.com, so you can be confident your experience is completely risk-free.
Digital files for 3D printing.
Example Projects
Plant and animal cells:

Trebuchet:

Gear mechanisms:

Videos:
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 and refund policy
Our mission is to ensure all customers are fully satisfied with their purchase. If that is not the case, please notify us, and we will make every effort to address your concerns. Refunds are available up to 14 days after an order or subscription renewal. After 14 days, all purchases and/or processed payments are final.
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 do I manage my subscription?
- Click your account icon at the top right of the homepage.
- Select "Orders," then click the "Manage Subscription" button at the top of the page.
- Click your 11-digit subscription number.
- On this page, you can manage your subscription and payment method.
How many kits do I get access to?
Each month, we release a curated selection of 3D-printable educational kits. This includes brand-new designs, as well as many returning favorites that stay available across multiple months, sometimes with updates and improvements based on customer feedback. Think of it as a monthly drop: fresh, exciting, and always evolving.
If you happen to miss a kit, don’t worry. Popular kits often remain available or make a comeback in future months, usually even better than before. At the end of each month, some kits rotate into our vault so we can rework and refine them using real customer feedback. This keeps our collection feeling fun, thoughtful, and full of surprises, so there’s always something new to look forward to.
Is anything shipped to me?
Print-A-Kit is 100% digital and designed to be 3D printed using your own 3D printer. Learning resources are available as PDFs for paper printing. No shipping is required. You can access each month’s kits through the “Subscriber Access Portal” at the top of the Print-A-Kit homepage.