The weekend before last I finished up casting all the Toy Story Robot parts and began the long process of cleanup and primer. This weekend, though, I got to see some actual progress!

My plan for the treads was to mix up a small amount of red silicone and paint it in the letters and numbers. Once that set, I followed it with a coat of of grey (OK, a bit too much pigment made them black) to make the base of the tread. Once that cured, they would be glued into a loop with additional silicone.

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The result was not what I wanted. The silicone was too translucent to get a good red and the the black showed through. Bleh! When I joined the loops, I was really unhappy with the seams as well.

Phase two will be to cast plastic in my molds, join the loop and putty the seam and make a new mold for a one piece casting. The only thing I can’t figure out is how to color the letters since both wants to stick to silicone. Any ideas??

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I cleaned up a set of wheels for the prototype and got them painted. It’s nice when the paint actually matches the cap!

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Bases painted

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and handles!

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Once the paint dried, I test fit the wheels. The best part is that they require no glue! All pressure fit!

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What is this? A new Pokemon? An Adventure Time character? No, I forgot to drill two detail holes in the chest piece.

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From the front it makes more sense. I added screws into each.

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So I could make this modification to the other copies, I made a cardboard template to mark the spots.

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To make the arms pivot, I made a Bondo socket over an extra acrylic gem from the same mold as the shoulder.

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I made a silicone mold of the piece so I could duplicate it for the run.

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The socket is hot glued inside the chest to hold the shoulders in place.

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Shoulder in place with full rotation!

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I cast claws in SmoothCast 60 which is a flexible plastic. Apparently, the plastic also repels sharks so be sure to take your robot swimming with you.

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It’s not as flexible as rubber but it will allow the claw to grip!

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A test fit of the claws on the forearm.

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This shows how the pieces fit together to allow the arm to telescope.

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A test fit of everything I have painted for the prototype, all pressure fit together.

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The white back piece will eventually be glued to the chest but the battery hatch is a pressure fit piece. It’s starting to look a lot like a Robot!

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I hope everyone has a happy holiday! Thanks for reading the blog!

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2 Responses to Progress Weekend December 20-22

  1. Allen says:

    When are you finished with the robot?

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