Do-Nothing Machine
Description
Wikipedia has an awesome .gif of it in action
upload.wikimedia.org/wikipedia/commons/9/9f/Trammel_of_Archimedes_Large.gif
The arm could be made more complex, to add a handle or pen holder, but my aim was simplicity. I didn't want to distract from the motion of the device.
Edit: Base-V2. Made some slight changes to the base. Fillets on some of the external faces to get rid of the sharp edges and smoothed out the internal sharp edge the slider would occasionally hit. This should give a smoother motion.
Instructions
You may need to file any rough spots off the tracks or off the shuttles.
Assemble as you see fit and crank to your heart's content.
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Wow, thanks for the awesome thing! I just printed one at half scale using my MakerBot Replicator and it turned out near flawlessly with very minor sanding.
Printed well, but one of the shuttle rods snapped at it's base almost immediately. *DONT_KNOW*
While building the arm on a Cupcake, the extruder kept hitting the bolts on the standard build platform. Had to give it up for now. Might try making it a bit smaller.
This thing is awesome. I printed out one and I didnt need to file anything down. It all just worked right away. Thanks for the upload!
Fun! I remember making one of these out of legos - I think it was called a 'Kentucky do-nothing'.
Double-version with a spring could be my belt-idler for the x-carriage i`m looking for!
Do-nothing but span the belt! ;)
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