Reply by Manitario

  • Advertise with us

Posted on Help with frame and panel calculations, please

View Manitario's profile


2816 posts in 3768 days

#1 posted 02-28-2019 05:29 PM

This is something that you don’t want to guess at; there are many great online calculators for estimating wood expansion/contraction, eg.

The main factor to consider is how the moisture content of your wood will change seasonally. I live in Ontario; hot summers, cold winters. The moisture content of the wood changes from a low of about 4% in the winter to a high of about 9% in the summer. For me, QSRO will fluctuate at least 3/32 per 12” yearly. You’d also want to leave a tiny bit of “extra” room, so again, I’d be looking at leaving at least 1/16 on each side of a 12” panel.

There are many great stories on this site of cracked panels from those of us that have not calculated wood expansion properly…myself included.

-- Sometimes the creative process requires foul language. -- Charles Neil

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics