Take your block-building to a whole new level with 3D printed LEGO tape, made with rubber material that can cling to glass without adhesive.

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Gravity has just been conquered by the mighty LEGO brick. How, exactly? It’s all thanks to a simple project from Adafruit, where you can now make your own 3D printed LEGO tape.

Stick it onto any flat surface, whether it’s a ninety degree angle or totally upside down, and then get building.

The really smart thing, however, is that these strips are 3D printed with a flexible rubber material. It’s fantastic for glass surfaces, where it uses the power of suction to cling without any sticky adhesive.

See the 3D printed LEGO tape in action it the video below. And if you want to get really wild and crazy, try combining it with other 3D printing LEGO projects, like DIY LED bricks for dramatic lighting effects.

How Does 3D Printed LEGO Tape Work?

The secret ingredient here is a flexible 3D printing filament called Ninjaflex. With Ninjaflex you can fabricate any number of objects with all the strength and durability of rubber. But it also has the added flexibility of, um, flexibility.

According to Adafruit, the strips have a tight tolerance, which means they should have a pretty solid connection to standard LEGO bricks. “Even small 1 by 1 bricks connect nicely and are able to stay connected,” says the tutorial, “even when the strip is curved and flexed.”

But there’s a important factor in ensuring the LEGO strips will cling a glass surface. The 3D printer needs to have a heated glass bed to produce a glossy, smooth underside for each strip.

The way this works is that the heated glass bed fuses the layers together, and results in a glossy surface. When the surface is pressed against a pane of glass, it creates air-tight suction that can carry a fair amount of weight. Like, say, an ABS plastic LEGO brick.

The files to make your own 3D printed LEGO tape are available to download from Thingiverse. And if you like their work at Adafruit and want to see more of their projects in future, don’t forget to show your appreciation and tip the designer.