Just like a bunch of other people have said, it takes a little bit to figure out how low to adjust the blade and get it dialed in, but once I figured it out it's been amazing for stripping a bunch of different sizes of copper wire. Helpful tip, it probably needs to be lower than you think it does, it will not break the blade or anything. Also, another Trek I have found is to put the wire in a hole that is lower and then it pushes it up into the blade. Only problem I have found is that it needs a shield on the side of the inside of the motor. wire sometimes curves right into it and gets stuck if you're not holding the other end, but it's an easy fix, just wrap a piece of aluminum around it or put an eyelet in front to run the wire through.
Kaaren Petriga 
