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I made a micro benchtop milling machine!

I’ve really needed a mill for some time now so I decided to build one myself. There’s a full writeup on Instructables.

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Animatronic wings!

Now that the home remodeling is done it’s time to get back to some other projects including these animatronic wings I’ve been building. This mechanism is for a cosplayer’s anime character. All four wing move up/down and have a forward/back flapping motion. The packaging on this was pretty tough. The final wings are tinted polycarbonate- the wood wings are just pattern stand ins. Still need to 3d print the center body cover sections.

Latest version- here you can see how the twin lead screw drive of the previous version has been replaced by a much more compact single screw drive. The wing flapping mechanics are the same as before.

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Old mechanism- this used twin lead screws with a sliding pin arrangement to lift the wings. Since the servos need to have multiple rotations the pots have been replaced by external pots to give position feedback.

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Welding practice for tiny work.

Welding .009″ dia wire around the threads of a no. 6 screw. Welding really small stuff like this just requires a bit of practice and really steady hands.

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Welding razor blades together at the cutting edge. This is at 40X magnification- most all of the blade grind is still visible.

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Welding .009″ dia wire around the edge of the internal threads of a 6-32 nut. In one side and out the other. Tricky to do- would have been easier with thinner filler wire.

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