...
> When I buy boards - they hate me because I want to pick each
> one up for weight. There's a lot of difference between the weights of
> various boards of the same dimension according to it's sap content (slow
> growth / fast growth and where It came off the log).

You pick the ligtest board?

If it is light because of less oil/humidity..., then fine. But What about the grain. We always read to pick wood with rings close together for high strength. I guess that rings close together will also mean a change in proportion of hard wintergrown vs softer summergrown wood, and so this will mean a heavier board. If I am right, then it will be a choice of strengt vs low weigth.

Jan Gunnar