Quickly create a beautiful tetrahedron cluster and learn a lot about geometry along the way! This cluster is comprised of 10 individual tetrahedrons connected together. There's no limit to how big you can make the cluster!
- Coffee straws (60 needed for the size shown. Try cutting them in half if you don't have many)
- String (You'll want something thin and strong. I'm using jewelry string from the craft store)
Step 1: Creating the Tetrahedron Modules
The cluster I made is comprised of 10 tetrahedron cells. We will start by creating each cell individually and later connect them together. Each tetrahedron is woven together with a single piece of string
- Measure about 4 feet of string. It takes quite a bit of string to weave the seven inch long straws together.
- Thread three straws onto the string
- Grab the two loose ends of string and thread them both through a single new straw.
- Pull the straws together and you should now have a triangle with a line attached.
- Add new straws to each end of the string. You will now have all six straws needed to complete the tetrahedron.
- Grab the end of a string (it doesn't matter which one) and thread it through the furthest straw of the triangle. Please refer to the images if this is confusing.
- Now pull both strings together and your tetrahedron will take shape! Pull the straws together tightly for a precise fit.
- Tie a double knot and trim the excess string
Once you get the hang of it you can make a tetrahedron cell in just about one minute! If you plan on combining them together into a larger cluster you will need at least 4 cells.
Step 2: Assembling the Modules Together
Once you have at least 4 cells you can weave them together to form larger clusters. There is no limit to how many you can connect and what shapes you can create!
- Start by weaving three cells together. Thread a new piece of string through the three edges that connect forming a triangle. Tie a double knot and trim the excess string.
- Continue attaching new cells by weaving string through the connecting triangles. Make sure you attach each point together so your cluster is stable.