Roll-A-Hedgehog-Uno
Derived from
Description
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Just a little hedgehog, rollin' along.
Thanks to everyone who test printed before I had a chance to do so. With your feedback, my first print of this rolled great!
By the way, the hedgehog profile was borrowed from a wood ramp walking hedgehog my parents brought back from a trip to the Czeck Republic. I'd like to render that printable too.
Instructions
I printed without acceleration, 15% fill, 0 extra shells. Less fill would probably still be plenty sturdy.
Note that my rendering is misleading: this is not set up for dualstrusion yet. I suppose with the right software you could extract the bodies and save separately?
Take precautions to preserve exterior surface finish: at this scale (~44mm long) there is a consistent 0.7mm gap between wheels and body. Any blobbing or such surface artifacts risks bridging that gap.
Using the scale function to increase overall size will increase this gap proportionally... but he'll be less cute.
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Per AdanA's suggestion, I scaled it to 60% of the original size. I had to use some pliers to loosen the wheels after it had fully cooled, but it rolls! And it's 40% cuter.
Printed nice at 1:1. Sliced with slic3r dev from git on a sells mendel with a. 5mm jhead at. 3mm layer hight. The wheels were stuck due to warping of the wheel holder edges but a bit of prying and trusting and they turn freely now.
Thanks for the cute toy!
Printed one, and couldn't pry the wheels loose. It's pretty small, perhaps 1.5 inches long, so I've doubled size and am printing another one. Fingers crossed!
Yeah, it's definitely tiny as posted. I printed the minifig cart at that size and was amazed the wheels still worked.
I modeled it in SolidWorks... hastily! I'll take another whack at it. I used a cavity function, which, in retrospect, creates a uniform gap around the wheels at a normal, which means the horizontal gap varies. I'll try a different method.
Printing at double size, I can see that there doesn't appear to be a gap between the wheels and body. At least, skeinforge appears to see the two shapes as joined, to the point where it's laying out a solid horizontal (parallel to the build plate) layer about 20% of the way up that runs across the wheels and into the body. I'm letting it finish, because perhaps I can break the layers apart, but I'm far from certain that'll work.
Can you perhaps rendering it again, with a wider gap between the two? What did you model it in?
License
Very Nice!
Thanks! I still love it, even all these weeks later.