Eigenvector wrote:
Let's say you have a long board that has a bow to it - nothing huge but
maybe 1" deflection over 8 feet on a 6" board. How would you remove that
bow? I'm thinking about it and wonder, because you don't have a straight
edge to use as as reference point, removing the bow with a bandsaw or
tablesaw seems terribly wasteful, but bending a 6" board doesn't seem
possible.

That's why you have the longbed jointer...

It's either straighten the board if you need the full length or use
shorter sections of it so the waste isn't as much. That's woodworking...

If, otoh, it was a 1x fascia board or something similar, and
construction, not "woodworking", it would be quite possible in many
circumstances to nail it in place on one end and spring it into
alignment as one worked one's way along the length. Much depends on the
circumstances...

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