Giant Building Blocks - Educational Toy (Full-size can be used as a study desk/scooter)

             Giant Building Blocks—even scaled down eightfold, they remain impressively large, and at 1/16th scale, they function as standard large-particle building blocks. The original design is large enough for a five-year-old to use as a scooter; its largest component measures nearly half a meter (480 mm) and requires four days and four kilograms of filament to print. Lacking a sufficiently large printer, I created a 1/8th-scale "cub" version and a 1/64th mini version (the mini version is roughly the size of regular large-particle building blocks). Model validation was successful, with reasonable tolerances and exceptional smoothness. A comparison is included showing the full-size tire.

The entire model features rounded edges for child safety. Components connect via pins; it's recommended to print a test pin to verify printer accuracy before mass production. My printer scaled the model to 99.99%.

The pin fit is perfect. Wheels can be printed directly, leaving sufficient space for smooth rotation.

The 1/8th version can be used as oversized building blocks, the 1/64th version as large building blocks, while the original is truly impressive—it can function as a scooter, learning desk, ladder, seesaw, castle, and more. For the original design, carbon fiber filament is recommended for the pins to increase strength.

The original and 1/8th versions can have their heads designed as speakers, using translucent filament for the eyes as ambient lighting. Charging ports are provided at the base. An Apple 7P vibration motor (¥1.3) is suggested for vibration and sound, along with an M28 Bluetooth module (¥3.5).

It has a built-in amplifier to directly drive the Apple motor, and with an 18650 battery (¥4) and mini charging board (¥2), the total cost is just over ¥10. That's how I did it. I have a video on Bilibili; feel free to check it out.