Cardboard Tensegrity Table

While searching for a fun and unique project to dive into, I came across tensegrity structures. The physics behind them is super intriguing, and I mostly saw small-scale versions, which inspired me to build a larger one—with enough strength to lift lightweight objects! The optical illusion effect is hands down my favorite feature, and the best part is how simple it is to create. It doesn’t take much time or fancy materials, so pretty much anyone can jump in and give it a try!

1. Cardboard
2. glue
3. scissors
4. paper cutter
5. string
6. and some time ;)

Start by cutting cardboard strips that are 2 cm wide—these will be used to border the two base platforms and the vertical stems of your tensegrity model. Use a ruler and pencil to mark straight lines for accuracy, and a craft knife with a metal ruler on a cutting mat for clean, safe cuts. Next, cut out four rectangular or square pieces of cardboard; in this example, rectangles measuring 16 cm by 18 cm were used. These will form the main base and top platforms of your structure. For the best results, ensure all pieces are uniform in size to keep the structure balanced and visually appealing.

Once all your cardboard pieces and strips are cut, begin assembling the structure by gluing the 2 cm border strips around the edges of the base and top platform pieces. This adds strength and gives a finished look. Use a strong adhesive like hot glue for a quick and firm bond. After the borders are secure, attach the vertical stems in place according to your design, ensuring everything is aligned and stable. Take your time during this step—accurate positioning will make the final structure more balanced and visually striking. Let the glue dry completely before moving on. Make four holes on the four corners and one on top. After everything is done it should look like the last picture.

With the base and top platforms assembled, it’s time to add the strings that give the tensegrity structure its signature floating effect. Start by poking holes in each of the four corners of both the base and the top platform—these will anchor the tension strings. Additionally, make one hole at the centre or near the top platform for the central support string. Thread the strings through the holes, connecting the top and bottom parts one on top of the other at the corners, and use the centre string to balance the structure vertically. Adjust the tension carefully until the top platform appears to float. Tie secure knots and double-check for symmetry to maintain stability and that cool optical illusion effect! Use glue to secure the strings firmly.

Now that your tensegrity structure is assembled, it’s time to bring it to life with some colour! Use paints, markers, or decorative paper to add personality and style to your model. You can go for bold, contrasting shades to highlight the floating illusion, or choose a theme—like metallic for a futuristic look or pastels for a softer vibe. Be sure to paint carefully around the strings and edges, and let each layer dry fully before handling. This step not only makes your creation visually striking but also adds a polished, finished touch that really makes it stand out.