I made this instructable because I needed a way to drive multiple axles in sync for another instructable I am making. Unlike some makers I have no access to any CNC machines and due to that, I cannot build custom parts easily. One thing I am fortunate to have though is a fairly nice wood working shop, not that you need a very nice one for this project. I have attached the link to the design in the 123D library for all those CNCers out there, but for everyone else you can make this with some simple tools. This sprocket can be used for mechanical purposes, or it can be used for art and decoration.
-a hand saw (or a table saw that can cut 45 degrees)
-a drill (I used a drill press, but a drill will work)
-a 3/4 inch drill bit
-wood thicker than 1/8 in (plywood will splinter easily)
-an accurate ruler or measuring tape
-a clamp or two
-a metal file or sand paper
-SAFETY FIRST! safety glasses
lets get started!
Step 1: Squaring
Step 2: Octagonalizing
NOTE: disregard the drilled out portion of this picture
Step 3: Drilling
Step 4: Sanding/Filing
Step 5: Drive belt
Step 6: Why use a computer?
I used 123D which is great because it is free and easy to use, my next project, which is a secret for now, will also be constructed in that program. I encourage all makers to at least learn how to use CAD(computer aided design) programs as it will come in handy.