Blueprint Cup Racer

The original Rapid Racer Mk. 2, developed from the winning design of the 2026 McMaster University Design League CADathon, one of the largest 24 hour CAD and design competitions in the world. We sponsored the 400+ contestant event and walked away with this car for our store and the world.

Our track available here: https://makerworld.com/en/models/2443959-print-and-play-blueprint-cup-track#profileId-2682222

Easier track to print here: https://makerworld.com/en/models/1205721-dc-car-race-track?from=search#profileId-1219564

This is a fully buildable, modular race car designed for printing, customizing, and competing. All STL files are open-source, so you can download, modify, remix, and improve the design however you like. 

Print it. Tune it. Upgrade it. Break records. Repeat.

The car is designed to be lightweight, durable, and easy to assemble. Swap parts, test different wheel setups, adjust weight distribution, and experiment with gear ratios or body styles. Whether you’re chasing speed, style, or engineering perfection; the possibilities are endless.

🏁 Want to compete?
Bring your build into Print and Play (Hamilton, Ontario) and test it on our in-store track. We’re tracking world records, can you set the fastest time?

🌍 Not local? No problem.
Download the files and create your own track at home, school, or makerspace. Start your own league. Set your own rules. Share your upgrades. Remix the car. Build something faster.

This project is about open design, creative engineering, and friendly competition.

If you improve the design, tag it. If you beat the record, prove it. If you build something wild, we want to see it.

Let’s see how fast this platform can go. 🚀

Heavily inspired by Azpaca on Youtube. Design inspired and a few parts borrowed from LucaDilo's DC car. His track is great and this car is compatible with that track as well, but the car is designed around a smaller motor class that didn't suit our needs. That's why we sponsored one of the world's largest 24 hour design competitions to help us create the perfect 3D-printed race car, based around the 130 DC motor, one of the most common elecrtic motors in the world.

Current Blueprint Cup record: 3.208 m/s - set on a Rapid Racer Mk.2 with a Tamiya Hyper Dash motor, 85A TPU rear tires, and two AAA batteries. That's within a tenth of a meter per second of a stock Tamiya Mini 4WD. With a rear-wheel-drive, 80-gram car running a 5:4 gear ratio on a tabletop track. We're punching above our weight class - and we're just getting started.

Updates to follow regularly. Modifications encouraged!

Design by Print and Play on MakerWorld (license: BY).