Instructables

Step 3: Heat Shrink Time

You could easily use hot glue but it is harder to get back into the circuit if a wire comes out. I prefer heat shrink tubing. I put two layers around the circuit (so that when I put the potentiometer on it wouldn't poke through to the circuit). I then placed the potentiometer on top and slid a piece of heat shrink with a hole for the potentiometer shaft, shrinking each piece before putting on the next. 
 
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