So what is my robot printing?
Well, a guy over on the SJ Games forums had an idea about printing out the 3d Ogre standup sheets, created as part of the Ogre Kickstarter campaign, on clear plastic, producing clear Ogres where you only see the design, not the material it's printed on. I thought that was rather clever, and then realized that if I could extract the shapes from the graphics in the PDF, I could print out the shapes and assemble my own plastic Ogres. I got to the point of having .stl files ready to print:
And then I thought, "Hang on. I'm dealing with a 3d printer. Why am I messing around with 2d objects?" The goal became designing and printing a full 3d Ogre.
Design was largely an exercise in figuring out how to use Sketchup and what plugins I wanted to add in. Starting with some of the pieces in the "2.5d" design, there was a lot of use of the extrusion and scaling tools, and it all became much easier when I found a plugin that made geometric solids.
So far, so good. But printing was a problem. When I converted the design to gcode, Slic3r dropped significant parts. The conning tower, for example, simply vanished:
Why was it doing this? I had no idea. But on a hunch, I switched to different software for slicing and printing. Cura seemed to treat the design more as it was intended:
That looked more promising, so I sent it to the printer. And this is what I got:
This Mk. IV is about three inches long. I note that features smaller than about a half-millimeter may as well not be there. I may play with this a bit and add a few more surface features like some tread texture. I also want the conning tower to be a bit different in various ways, and the front part should have steeper angles. And at some point, I should build a Mk. V.