I'm going to write an article for Contact! magazine describing how to
build one of these balancers with included drawings (one word is worth
a thousand pictures, or something like that!). I just used mine today
to balance my three-blade which I recently painted one blade white, one
red, and one blue! I balanced it by spraying on more paint front and
back on the lighter blades. It's nice to be able to spray away your
unbalance! The balancer is so sensitive you can watch the balance
slightly shift as the paint dries!