How much will these panels move?

Boxduh | Posted in Joinery on September 12, 2002 03:15am

My panels are cherry, KD, flat and rift sawn mix of edgeglued boards, none wider than 4″, glued up panels in the range of 13″ to 15″ width. Finished thickness is about 7/16″ How much seasonal movement should I design for? We live in the northeast.

Replies

SgianDubh | Sep 12, 2002 06:19am | #1
Allow for a maximum of 2 mm shrinkage, and 2 mm expansion (whatever that is in 'before the wheel' measurements) under normal interior conditions, and you'll be more than safe. Normal interior conditions range from typical housing from about 120 years ago, to very modern all-singing, all-dancing, fully insulated, and climate controlled. Slainte.

RJFurniture
DaveHeinlein | Sep 13, 2002 04:10am | #2
You're looking at around 3/16- 1/4" difference between 6 and 14 percent. This is what my Northeast, high and dry house with hot water baseboard heat house reads throughout the year.
HowardAcheson | Sep 14, 2002 12:19am | #3
Go to http://www.woodbin.com and click on the "Shrinkulator. Input wood species, width and range of either moisture content or relative humidity. The output will be the expansion/contraction.