Stick theory is the knowledge behind making kinetically stable stick art (or whatever you may call it). Making these little structures with only wooden sticks is quite a challenge, and it helps to understand the behaviours of the sticks and methods used to construct these things to save (some) frustration.
On this page, you'll find the information I have learnt from experience, the (rough) physics behind the craft, and some guides on putting your knowledge to practice
SO you have a pile of sticks and you're probably wondering "How could I possibly make these sticks stay together without any glue??". Well i've got you. Sticks need to be in tension in order to not fall appart. This creates a lot of friction, which prevents the sticks from slipping appart.
There is one shape that holds using only four sticks. I called them boomerangs when I was a wee little 7 yr old. This is a very easy shape to make, perfect for starting out. I highly advise finding a soft smooth surface you can push into, but sticks wont be able to get caught by. Such as as bed or lounge. This is so you can push sticks underneath oneanother.
This method below is the simplest way to make this shape, however there are various ways to make it (you'll get to do these later)
If you're new to this craft, you're probably looking at regular paddle-pop sticks/popsticks/popsicle sticks, which are small and quite limiting with what you can make.
I use wooden coffee stirring sticks, or long and thin craft sticks. Ideally, the longer and thinner, the better
A place to find these are your local dollar store or craft store, however they may not have the specific long and thing sticks you're looking for.
If you can find a more flexible but still elastic material than wood, you will have a much better time!
Perhaps the most important part of this craft is being able to understand how tension
To make a structure that holds together by itself, each stick needs to be in tension. A key principle is that all sticks must have at least 3 other sticks in contact in order to create tension. Why is this the case? Well its to make the stick bend. a stick cannot bend
Structures held together entirely by tension and friction are of course fragile, and frequently slip and pop during construction. Here are some of the ways that sticks tend to missbehave, and some methods to reduce these troubles from occuring
method of squashing sticks between other sticks to hold it in place without tension
sometimes it's hard to get sticks to where you want them to be. SO i've found a number of methods to menuever sticks into position
In order to make larger complex structures, longer sticks feel all the more necessary. However there are methods to get around this limitation.
Merging is a method of essentially "lengthening" a stick by weaving a stick under and over the same sticks of another one. It can be used to attach shapes together.
An interesting behaviour of this craft is the phenomena of some shapes bending into the third dimention. This is a concept I call twist and can have interesting implications
How do you make sticks pop into three-dee? that's a question i'm still trying to find an answer to, but I have found few techniques that work
yibber yabber here