In the video demostration, they weighed it before and after.
There was about a grain difference, and they did a full 8" or 9" "dip" job on it.

I had trouble with it though. I tried it on Easton XX78 Aluminums, and the spray laquer would not cover the printed design, even with many coats. Haven't had time to investigate why. The video said it would work on carbon and aluminum.