MacGyvrBot Babies

by MacGyvrBot, published

MacGyvrBot Babies by MacGyvrBot Mar 29, 2013
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MacGyvrBot Babies by MacGyvrBot is licensed under the GNU - GPL license.

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What? Did you think that self-replicating 3D printers are fully grown when they are born?


  1. Print two sets of baby bot parts using two different colors of ABS.
  2. Coat the parts with solvent* to make them strong, sand off flanges and rough spots, then coat again and sand again.
  3. Make sure all the parts fit together, then assemble two-colored baby bots and solvent-bond the parts.
  4. Sand again to make smooth joints and coat with solvent again for a glossy finish.
  5. Drill tiny holes and use pieces of extruded filament to go from the spool to the extruder.

-Use CAUTION during solvent bonding!
-Use solvent with MEK (methyl ethyl keytone) such as Oatey cleaner (yellow label white can) made for ABS plumbing pipe (or use acetone or superglue).
-Work in well-ventilated area.
-Use eye protection.
-The solvent dissolves many things, and the wet plastic stains whatever it touches!
-Use latex NOT vinyl gloves!
-Use aluminum foil on work surface!
-The solvent can also be used to heal delaminated parts, but BE CAREFUL!

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The babies do print very well. The pictures show how they can be printed in two jobs using separate colors and assembled two-tone. I also did some sanding and swabbing down with acetone on the ABS material. Use some extruded filament to create the loop of filament on the top of the model.

This was one of the first things I designed in Tinkercad and then printed with the built-from-a-kit Printrbot LC. Printing in pieces made it unnecessary to use support. These babies made good show-and-tell at 3D printer demos.

Do the 'babies' actually print?