How to Build a Magnetic Cube with Speks Balls

Quick answer

To build a magnetic cube with Speks balls, start with a flat square of 9 balls, then fold the sides up and connect the top. Use Supers 33mm Magnet Balls for easier handling, and follow the steps below for a perfect cube every time.

Building a magnetic cube is one of the most satisfying projects you can do with Speks balls. It’s a great way to explore the magnetic properties of these tiny spheres while creating a geometric shape that looks cool on your desk. Whether you’re a beginner or have been fidgeting for a while, this guide will walk you through the process step by step.

In this tutorial, we’ll cover the materials you need, the basic technique, and some common mistakes to avoid. By the end, you’ll have a sturdy magnetic cube that you can use as a desk organizer, a fidget toy, or just a fun conversation starter.

What You Need to Build a Magnetic Cube

The most important thing is a set of magnetic balls. Speks balls come in various sizes, but for a cube, we recommend using Supers 33mm Magnet Balls. These larger balls are easier to handle and snap together quickly, making them ideal for beginners. You’ll need at least 27 balls to form a 3x3x3 cube, but having a few extra is always a good idea in case you drop one.

If you don’t have Supers, you can use any Speks magnetic balls you have on hand. The technique is the same, but smaller balls may require a bit more patience. Make sure your balls are clean and free of dust, as debris can affect how well they stick together.

• Use a flat, non-metal surface to build on, like a wooden desk or a plastic tray.
• Keep a bowl nearby to hold extra balls so they don’t roll away.

Step 1: Create a Flat Square

Start by making a flat square of 9 balls arranged in a 3x3 grid. This will be the bottom of your cube. To do this, simply place the balls close together and let them snap into place. Make sure the grid is even and the balls are aligned in straight rows.

A common mistake is to let the balls bunch up or form a cluster instead of a neat square. If that happens, gently separate them and rearrange until you have a clean 3x3 grid. This foundation is crucial because any misalignment will affect the final shape.

• Check that all 9 balls are touching their neighbors evenly.

Step 2: Build the Sides

Next, you’ll create the four sides of the cube. Each side is also a 3x3 grid of balls. Build one side at a time by attaching a row of 3 balls to each edge of the bottom square. Start with one edge, then move to the opposite edge, and finally the remaining two edges.

When attaching the sides, make sure they stand up perpendicular to the bottom. A common mistake is to let the sides lean inward or outward, which will make the cube lopsided. Use your fingers to gently push the sides into a vertical position as you go.

• Work on a flat surface so the sides stay upright.

Step 3: Connect the Sides at the Corners

Once all four sides are in place, you need to connect them at the corners. The balls at the edges of each side will naturally attract each other, but you may need to guide them together. Gently press the corner balls until they snap into place, forming a sturdy frame.

A common mistake is to force the corners together too quickly, which can cause the balls to pop out of alignment. Take your time and adjust each corner individually. You want all four corners to be evenly joined so the cube is symmetrical.

• If a corner doesn’t align, lift the side slightly and reposition it.

Step 4: Add the Top Face

Now it’s time to close the cube by adding the top face. Create another 3x3 grid of 9 balls, just like the bottom. Carefully place it on top of the open frame and press down gently so it snaps into place. Make sure the top grid aligns with the sides.

This step can be tricky because the top may not sit perfectly flat. A common mistake is to press too hard, which can distort the cube. Instead, let the magnets do the work—place the grid on top and give it a few seconds to settle. If needed, adjust the balls from underneath to ensure a snug fit.

• Once the top is on, gently squeeze the cube from all sides to ensure it’s secure.

Step-by-Step Checklist

1. Prepare your workspace: Clear a flat, non-metal surface and gather at least 27 magnetic balls. Having extra balls on hand is useful. A clean, flat surface prevents misalignment and lost balls.
2. Build the base square: Arrange 9 balls into a perfect 3x3 grid. Ensure all balls are touching and the grid is even. A neat base is the foundation for a symmetrical cube.
3. Attach the side walls: Add three rows of balls to each edge of the base, forming four upright sides. Keep them perpendicular. Check that sides are vertical before moving on.
4. Connect the corners: Press the edge balls together to join the sides at each corner. Adjust gently to avoid misalignment. Smooth corners make the cube look clean and professional.
5. Cap with the top face: Place a final 3x3 grid on top and press down evenly until it snaps into place. Let the magnets settle; avoid forcing the top to prevent distortion.

Products Mentioned

• Supers 33mm Magnet Balls: Speks Supers takes all the fun of original Speks, and supersizes ‘em so each smooth magnetic ball fits perfectly in the palm of your hand. Fidget with them for stress relief, or use them to organize paper clips - they’re practical and playful! The larger size makes it easier to handle and snap together, which is ideal for building a magnetic cube, especially for beginners.
• Geode Magnetic Fidget Set: On-the-desk or on-the-go, Geode is the perfect fidget desk toy. Each set includes 12 pentagons or triangles that align and snap into the perfect sphere. Combine colors and shapes for bigger builds and more fun! While not used for the cube itself, this set can complement your magnetic collection, offering additional shapes for creative builds and fidgeting.

Building a magnetic cube with Speks balls is a fun and rewarding project that only takes a few minutes once you get the hang of it. With the right technique and a little patience, you’ll have a satisfying fidget toy and desk decoration. Try using different colors or combining sets to make your cube uniquely yours.