Reply To: How to know if wooden beams are completely straight?

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#766453
Benoît Van Noten
Participant

I was going to point to the same video.
But with a comment.
For really long boards, one should use the method laterally (the string in front of the edge to be tested and not above it {turn first the board a quarter turn of course} ) in such a way that the string sagging (if any) doesn’t give false indication.