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Third hand to help you


When you solder something very small, we burn your fingers with heat, then we think about an assistant. Well, the main assistant for this problem is the third hand. Back in school, I did this. device from clothespins screwed onto a bar. The design has limited maneuverability and excellent tenacity due to the use of crocodile clips.

This design has more flexibility in terms of maneuverability.

For the construction we need:
- copper or aluminum wire;
- a pair of crocodiles;
- 2 screws M4 * 20 mm;
- 2 screws M4 * 25 mm;
- four nuts M4
- 12 washers 4 mm
- four short springs;
- a board for the base.

The first step is to cut the wire to the length we need. We make 4 blanks, two long, two short. I have about 150 mm. We bend the rings at the ends so that the screws enter them. 50 mm short, also with screw rings.

Having removed the protection from the “crocodiles”, I found that one was crimped, and the second was screwed.
I had to straighten one ring and leave a straight end on the workpiece.

Mark the base plate and drill holes for a 4-screw in it.
Base with arbitrary sizes. I have this plywood 12 mm thick and 80 * 120 mm in size.

Further. On long workpieces, we bend the rings at an angle of 90about.

At the bottom of the base we pass the screws, those that are M4 * 25. After, lay out the sandwich from the plank: long workpiece, washer, spring, washer and nut. If you do not lay washers, then the adjustment occurs with jerks and the spring strives to fail. By the way, I have springs from a liquid soap dispenser, cut in half.

Half the construction is done.

After installing long workpieces, install short workpieces. Again a sandwich: billet, billet, washer, spring, washer, nut.
We fix the "crocodiles" in their places. Since we have one screw, we take an additional M4 * 10 screw and a washer.

Now your board is in reliable teeth, oh hands.

Thank you all for your attention and, as always, details of the assembly can be seen in the video:

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4 commentary
Author
Thank you, it's nice to read your comments)
Author
Do not poison the soul)
I have two purchased With huge loops, backlight and a bunch of all kinds of "clothespin holders." Gave it.
... I have never used it somehow. Somehow, I didn’t have to ... I don’t solder the radio components on the boards. (Not on these matters))). And for soldering some wires, or, especially, soldering the cross-wires, or something similar, they are not needed ... It's even a pity.
... People, home-made rivets ...)))
In general, people who know my passion for homemade products often give me things I don’t need. These are these “hands”, an engraver in a beautiful box with a huge set of unnecessary nozzles, Beautiful sets of wrenches (“souvenir” as I call them))), bit sets for a screwdriver (while you always use two curly ones .. . well and occasionally - flat) and a bunch of different "cool gadgets", such as roulette with built-in laser level, etc. ....
A good solution for lightweight boards: judging by the video, they hold tight enough. Another plus of the device is that you can adjust the compression ratio of the springs.

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