Bobblehead Windup Walker Cat
by petropixel, published
Not the most efficient use of a 5-pack of walker mechanisms, but somewhat more amusing. Now with video! http://www.youtube.com/watch?v=LompQ0sTG28
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Print the head with support. Catbodyf is the "regular cat" configuration, with all four legs moving forward. Catbodyproto allows you to install either walker mechanism forward or backwards. I thought running them in opposite directions would result in enhanced bobblehead action at the expense of forward motion, but this was not the case in real-world testing. Removing the mechanisms to switch directions is also much more difficult with the tolerances of my latest Replicator-printed body.
I used the 35mm spring pin for the neck and the 75mm snake pin for the tail. I did not alter the parts, they are interchangeable with the other parts at http://www.thingiverse.com/thing:17725 so if you'd rather make a giraffe cat, you can.