Data Matrix Dualstrusionator
Derived from
Description
You can encode the whole thingiverse url in your barcode, but the result will be pretty big. Probably too large to stamp into another model. However, you can just encode the Thingiverse thing number to get a pretty small code!
1: en.wikipedia.org/wiki/Data_Matrix
Instructions
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There's a QR code that's based on the Blackberry 21x21 matrix. You could encode that way, and it would be readable by most devices, even Google Goggles.
Too bad this didn't exist during the Demo Slam we had at NYCR.
Interesting. Not nearly as as smooth as the makerbot coin. Could you do a print with the piece lying down to see the difference in print quality?
Btw. how does the dualtruder affect the usable build surface?
You must be loosing a few centimeters on either side on the x axis using both. Even with a single extruder you must be loosing some surface due to the center offset.
Basically when you have dual MK7s your max X axis build area is around 85mm when you want to do a print involving both extruders. However, if you want to do just a normal 1 color print, your X axis build area is around 100mm, give or take a few mm. Y axis is the same either way, around 120mm. Also, with MK7 you gain a few mm in the Z axis - I'm getting around 122.
Single MK7s are centered, dual MK7s are ~32mm nozzle-to-nozzle, so you loose ~16mm from either edge (though any one extruder can still print there).
Will using a URL-shortening-service make the full URL encodeable in a reasonable size?
License

Great!
You beat me to it. :)
I guess I can stop thinking about my own and work on all the other projects now :)