While this version is 3d printed, it could also be made using traditional hand methods.
Step 1: How It Works
I was experimenting with various ways of 3d printing self-assembling hinges for future use in robot arms and legs. Making some hinges that can lock in place seemed like a good way to test the strength of the structures.
The helping hand has six configurable, lock in place, arms with interchangeable grippers. While this version was 3d printed, a similar jig could be made using acrylic or other plastic sheet material. It could even be made out of thin plywood. Three layers could be laminated together to make the arms.
Step 1 pic shows it set up for soldering with flashlight and magnifier. Pic 2 shows it folded up.
Step 2: Tools And Materials
100% silicone caulk and corn starch to make Oogoo. Details on making Oogoo can be found here:
24 4-40 x 1" round head screws and nuts
6 4-40 x 3/4" round head screws and nuts
2 1/2" diameter x 3/8" long neodymium magnets