First, I apologize for my bad english.
I'll show you how to make a knex camshaft or universal joint( or whatever it is ??)
I hope this instructable will be helpfull for some people.
If you have any questions, just ask me.
( this is my first instructable so if you have any tips and tricks for me... )
Step 1: What You Need
This is what you'll need.
Make 2 of those...
Add the blue rods...
Add some gray connectors...
Make 2 of them...
Add the gray rods and the tan clips...
Put all the parts together and you are done.