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  • MeredithLopez76 commented on WYE_Lance's instructable Mechanical Hand7 months ago
    Mechanical Hand

    I helped my 7-year old make this for his school science fair. While I do wish the supply list were more detailed - including the sizes for things, and how the craft sticks, cubes, and beads should all be the same width - the two of us managed to put this together in about an hour and a half, which includes letting the hot glue dry between steps. Even though ours isn't pretty, and the fingers aren't perfectly even or nice and neat, this thing still has grip! My son demonstrated this by picking up a "lightsaber" made out of a foam pool noodle. The instructions and photos were straightforward enough that my son understood what to do, and once it all started coming together he had no problem figuring out how it all worked together.FWIW, we used regular Scotch tape to hold the trig...see more »I helped my 7-year old make this for his school science fair. While I do wish the supply list were more detailed - including the sizes for things, and how the craft sticks, cubes, and beads should all be the same width - the two of us managed to put this together in about an hour and a half, which includes letting the hot glue dry between steps. Even though ours isn't pretty, and the fingers aren't perfectly even or nice and neat, this thing still has grip! My son demonstrated this by picking up a "lightsaber" made out of a foam pool noodle. The instructions and photos were straightforward enough that my son understood what to do, and once it all started coming together he had no problem figuring out how it all worked together.FWIW, we used regular Scotch tape to hold the trigger and hinge in place and duct tape to attach the skewer to the back of the hand. Instead of buying wood skewers I cut some wire hangers to the lengths we needed. We didn't have a cable tie, so I used a Velcro wrap to keep the skewer on the arm. The craft sticks we used are 4 1/2 in. long x 1/2 in. wide, and we used half-inch rounded craft beads for all the joints instead of blocks. The arm is 3 sticks long, which is perfect for my 7-year old.

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