: Learning curve redeux - I built my strong back with the most
: precision possible, made it perfectly level in every direction,
: and haven't moved it. I carefully cut my forms and used the
: baseline and water line to get everything perfect. I used a nice
: horizontal/vertical laser level and was quite sure everything
: was dead nutz. After attaching the inner sheerline and almost
: feeling satisfied I noticed an odd bump or two.

: 1st mistake: I attached the forms to the cross members(2x2 blocks),
: should have attached the cross members then attached forms. That
: was bound to be in a book I have I got bored reading.

: 2nd mistake: used the strong back as my base of level. Nothing is,
: wood isn't perfect, humidity and heat may deflect or move what I
: thought couldn't move.

: So I went back with what I know from building fences: a very tight
: string and a nice line level. I measured down to the water line
: instead of up from the strong back as before. I had the forms
: clamped to the cross members so I could bump left, right, up,
: down, plumb, and level. Now all is fair and I can get this thing
: moving.

: So I didn't go with what I know and tried to get all fancy with the
: laser forgetting my experience. Strings don't lie.
Hey Dan,
The only thing you have to satisfy is your eye, prefarably, a roving one as I find the need to move back and forth.This way you can pick up the slightest deviation from a geometrical rate of change of direction [bump].The shear strip is the most important as all else will slavishly follow it.Well, the deviation is smoothed out by the 4th strip
The ocean won't notice the odd bump ,but you will be forever mulling over it.No one else will either.
cheers, from Paul NZ who has and will continue to have to scarf all his reclaimed cedar strips in up to three places to get a boat length...painful.