help a beginner measure mc in wood with confidence

[Ron Nossaman]

> I'm doing RC&S boards...5% is not in my repertoire. For downbearing measurement, 
> I'm shooting for around 7-7.5%mc.  Both yourself and Ron seem to be saying the 
> crown of an RC&S board is not variable at different mc's.  I'm chicken and will 
> have to prove that to myself before I trust it. 

The crown will vary depending on panel compression. A board 
ribbed at 5% will crown more than one ribbed at 6% when you're 
setting bearing at 7%. The stiff rib set and low panel 
compression of an RC&S board will vary much less in unloaded 
crown than a CC or RC hybrid.

Ron N