Archive for July 22nd, 2011

Robot Hospital! Episode 18!

Hello RoHo connoisseurs!  It is, indeed, that time of the week, and we have prevailed against all odds to provide more mind-blowing infotainment despite constantly being on the verge of heat exhaustion all week.  This time, we’ve got some video of a very funny man being scanned, a demonstration of the import of infill (via sports equipment), and a high-temperature Thingiverse round-up.

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Of course you know, this means war!

Nerf Claymore Mine by diw08

Nerf Claymore Mine by diw08

This is the kind of warfare I can really get behind.  Settling disputes via Nerf dart.  While there are certainly several foam dart options on Thingiverse, this little dart claymore mine by diw08 is my new favorite.  I could see it being a part of an elaborate Rube Goldberg machine, a booby trap, sentry robot, or even as a part of a huge foam dart machine gun.  I’m really interested in seeing how this design progresses.  While not active at the time of this post, Diw08 has posted a streaming video feed for his Thing-O-Matic.

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Impossible Girl Live Show @ the MakerBot Workshop


You might have missed your chance to attend the live, pre-sold-out Impossible Girl show at the new MakerBot Workshop space, but here are a few glimpses of the fun.

Check out the live stream archive above and slideshow below!


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Fleur De Lis by phibroptic

Fleur de lis

Just a week after I bemoaned its absence, here we are: a printable Fleur De Lis.  Once again, Thingiverse rises to the challenge.  Is there anything that Thingiverse users can’t do?

I’m going to go with a “no” until definitively proven wrong, with an irrefutable proof in formal logic.  Thanks for continuing not to disprove me, phibroptic!

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Google SketchUp Design Tip – Fix Flipped Faces

Rotary Sprinklers by Supermange

Rotary Sprinklers by Supermange

If you’re using Google Sketchup for designing 3D printable models, you may have noticed that exporting to STL’s using some of the various plugins can be very hit-or-miss.  After checking out Supermange’s rotary sprinklers I was reminded of this quick fix for a very common design problem in Google Sketchup – the “flipped face.”

Looking at the screenshot above, you’ll notice that the facets of the object are either a white-and-light-gray tone or a dark-gray-and-darker-gray tone.  As a surface modeler, Google Sketchup doesn’t much pay much attention to whether a surface is on the outside or inside of a model.  However, once you turn it into an STL, this can create problems.

Fortunately, this is an easy problem to fix.  All you need to do is right click on the darker face (such as much of the top right flange of the model above) and select “Reverse face” from the menu.  While you can select multiple faces at once and flip all of them simultaneously, this still leaves a minor, and somewhat tedious, problem of detecting the flipped faces in the first place.  If they are too numerous or tiny to locate, you might be better off using some STL correction software to fix the flipped faces.

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