Count me as one of those who DOESN'T balance props. I have a balancer, only because it was a gift. I got it over 10 years ago and I have used it twice (The last time was just a year or two ago because I can only smoke in my workshop, and one winter I had nothing to build, so every time I went down for a smoke, I played with the prop a little more till it was PERFECT.... Broke it on the first takeoff with it! LOL)

In any case, One of the trade magazines did an article on it recently and their conclusion was that in MOST cases on glow engines it really wasn't necessary. Think about it, the reason to balance a prop it to reduce vibration. The piston going up and down at 11,000 RPM is creating WAY MORE vibration than a prop ever will.

So this is one of those "Some people swear that you HAVE to do it, and others swear you DON'T. You decide.

PS If you are using anything other than a wooden prop, make sure to scrape the edges with a knife or razor blade to remove the sharp edges!.