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      1. Build Progress:
        • Build in Progress...
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      So, I decided to make an Egg-bot because they looked cool, and because I had lots of left-over bits and pieces. I went with a combination of Niko's and Slobberknocker's builds with a couple modifications of my own. I ordered my EiBotBoard v.2.3 from Evil Mad Scientist EBB Driver Board and more brackets and screws from the Openbuilds Part Store.

      I had some leftover 1/8” aluminum plate, so I used my CNC to cut the Nema 17 and Nema 23 plates using Sketchucam to convert the Sketchup drawings to g-code.

      Before clean-up:

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      After clean-up:

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      I 3d printed the parts from Niko’s Egg-painter robot (OpenBuilds) build and from the Pen Holder for Eggbot by Geotek . Then, I used a combination of parts to assemble the whole thing because that combination worked to center the pen on the sphere using the other components I had.


      3D Printed parts used:

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      Niko's arm backer that mounts to the pen motor. I made it slightly thicker to accommodate a M5 lock nut and I filled in the hollow because it it mounted more securely this way.

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      The Pen holder was from Geotek and I went to the local hobby store and bought some CA hinges. Unfortunately they did not have the right sized screws so I made due with screw I already had in the miscellaneous spare parts trays.

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      The head and tail stock had foam and 100 grit sand paper mounted to better grip the spheres. The tail stock was originally designed for a ¼” bolt with a larger bearing (22 mm OD). I had a broken wheel from the cnc build so I popped the bearings out of it. I then made a shim that fit inside the 22 mm pocket converting it to 15 mm pocket. This would not have been necessary had I caught that prior to printing the originals.

      [​IMG]
      [​IMG]
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      The mounting and end brackets (aka feet) were Niko's design. The OB Part Store was out of 2 hole L brackets, so I bought a couple three hole brackets and cut them with the scroll saw.

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      The mount that secures the Eibot Board to the v-slot was also Niko's design.

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      The tail stock was mounted to the v-slot with 4 8mm M5 screws an T-nuts. I will have to count up the rest of the screws and lengths if for a BOM.
      Finished bot:
      [​IMG]

      Video of a quick test:


      We were short on eggs so many a Mandarin fell victim to the Mandarin Bot during the testing phase. I only had a few Sharpie ultra fine points so I couldn't go too crazy but here are a few quick tests. I did find two eggs and one has a stipple drawing using StippleGen2 (evil mad scientist).

      [​IMG]

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      1. Special Notes

        Thanks for everyone's great ideas.
      Vasileios, blindflight, MaryD and 2 others like this.
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  • Build Details

    Build License:
    • CC - Attribution - CC BY

    Reason for this Build

    I built this bot because I had leftover parts from my CNC build , it looked cool, everyone needs one, and building [email protected]#T is fun. Did I mention it is cool.

    Inspired by

    Inspired by the V-slot Sphere bot, and Niko's egg painting robot.