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My third hand damages wires insulation because it's holding them too tight. Any tips how to avoid this?

third hand

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    \$\begingroup\$ Put some heat-shrink on the clips? \$\endgroup\$ – Chris Johnson Feb 5 '14 at 12:14
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Wrap the teeth in heat-shrink tubing or electrical tape. It will still hold just as tightly, but without the teeth, the pressure on the wire being held will be less.

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I like to tightly wrap rubber bands around the back of the clips to take some of the pressure off. That way, you can adjust the pressure to your liking. Sometimes I use the alligator clips to hold a pair of cheap soldering heat sink clips and use those to actually hold more delicate components.

See the heat sink clip in this picture: enter image description here

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I have the same tool; I just bent the teeth on the clips inwards using a pair of pliers.

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    \$\begingroup\$ If the O.P. goes the heat shrink route, he'll be able to remove the heat shrink and restore the holder to its original state. Bent teeth are more permanent. \$\endgroup\$ – Nick Alexeev May 12 '14 at 23:57
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You could also change out the alligator clips for a spring clip instead. I found some small clips similar to this at a hardware store (http://www.homedepot.com/p/HDX-3-4-in-Mini-Spring-Clamp-80001/100656782?MERCH=RV-_-RV_nav_plp_rr-1--NA--100656782-_-N). They still squish the insulation a bit, but at least they don't bite into it like an alligator clip does.

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