[cboy]

In a number of threads mention has been made of "tuning up" your sanding boards --- that is, making them perfectly flat. Unfortunately, there isn't much on the site about HOW to do the tuning. I'm hoping some of the experts can walk us through doing this on "non adjustable" boards (boards without adjusting rods such as regular dura block boards). If a board is not true, how do we identify that and how do we get it true? (Posts with pics greatly appreciated.)