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Picture of Sugru Soldering Iron Custom Grip
I have been soldering a bunch of circuits lately and my hand has been getting fatigued. I thought that a bit of Sugru would help out. 

Step 1: RTFM - Cut open package...

Picture of RTFM - Cut open package...
Sugru-3.jpg
Get your stuff together and cut open package. Then knead the Sugru.