Manta Ray 3D Block Zoo

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I was inspired by the 3D Printing Professor's first 3D Block Zoo entry at http://www.thingiverse.com/thing:1927926. Of course, I wanted to do them in FreeCAD instead of Tinkercad. I suggest printing with supports, 10% infill, and a 0.2 mm layer height. I am using the new version of NetFabb to check my designs, which may or may not need repair. To be safe, I've added "(repaired)" after each one, even if they didn't actually require it. If you're interested in 3D printing, visit my website at http://phelps3d.co for more information.