LumberJocks

QS Oak Raised Panels for Roll-Top Desk

  • Advertise with us

« back to Designing Woodworking Projects forum

Forum topic by pastor_shane posted 2039 days ago 1231 views 0 times favorited 5 replies Add to Favorites Watch
View pastor_shane's profile

pastor_shane

30 posts in 2323 days


2039 days ago

Topic tags/keywords: oak

Fellow jocks,

I am currently undertaking a very elaborate poject: I am building a raised panel roll top desk (from plans I found on the internet-American Furniture Design Co,). I have cut all the rails and stiles and am now getting ready to cut the raised panels to size. My question is this: With QS Red Oak, how much clearance do I need to provide for changes in the humidity for the raised panels? This is my first time working with QS Oak, so I have no idea how stable it truly is. Thank you for any responses to my question. I will be posting my progress on-line in a few days.

-- Shane, Guttenberg, Iowa


5 replies so far

View CaptainSkully's profile

CaptainSkully

1190 posts in 2059 days


#1 posted 2037 days ago

In Texas, the breadboard ends of my red oak table top moved almost 1/4” throughout the year on each side. Sometimes they looked like a Greene & Greene, and sometimes like I shorted the length (we only have dinner parties during the few months they’re even). This is only true across the grain. Along the grain, red oak is very stable. Keep in mind that the 1/2” was across a 30” wide tabletop, so that’s only 1.67% expansion across the grain. On the flip side, you don’t want your panels falling out of their dado. I would make the dados 5/16” deep, make the tenon 1/4” long, prestain the panels (so that the panels don’t show raw wood due to shrinkage as they might if they’re stained after glue). That gives you 1/8” slop. I’d also glue the very center of the panels to the middle of their respective rails. That way they expand on either side evenly.

-- You can't control the wind, but you can trim your sails

View tenontim's profile

tenontim

2131 posts in 2245 days


#2 posted 2037 days ago

Here’s a chart to let you figure it out.

SPECIES QUARTERSAWN FLATSAWN
ALDER (RED) 0.0015 0.0026
ASH (WHITE) 0.0017 0.0027
ASPEN (QUAKING) 0.0012 0.0023
BASSWOOD 0.0023 0.0033
BEECH 0.19 0.0043
BIRCH (YELLOW) 0.0026 0.0034
BUTTERNUT 0.0012 0.0022
CHERRY (BLACK) 0.0013 0.0025
FIR (BALSAM) 0.0001 0.0024
MAHOGANY 0.0017 0.0024
MAPLE (RED) 0.0014 0.0029
MAPLE (SUGAR) 0.0017 0.0035
OAK (RED) 0.0016 0.0037
OAK (WHITE) 0.00018 0.0037
PINE (EAST WHITE) 0.0007 0.0021
PINE (LONGLEAF) 0.0018 0.0026
PINE (PONDEROSA) 0.0013 0.0022
POPLAR (YELLOW) 0.0016 0.0029
SWEETGUM 0.0018 0.0037
SYCAMORE 0.0017 0.003
TEAK 0.001 0.0019
WALNUT (BLACK) 0.0019 0.0027

Movement Value x Board Width x Worst Case M.C. Increase (10%)

-- Tim

View pastor_shane's profile

pastor_shane

30 posts in 2323 days


#3 posted 2037 days ago

Skully, Tim,

Thank you for your posts to my question. I was simply guessing .125” clearance in September. The widest rasised panel is 7.75” So Tim, if I am correct it would be 0.0016×7.75 +10%= .014??? Is this correct?

Thanks again!

-- Shane, Guttenberg, Iowa

View tenontim's profile

tenontim

2131 posts in 2245 days


#4 posted 2036 days ago

Sorry I haven’t checked back on this thread. 0.0016×7.75×10 = .124. Almost 1/8”

-- Tim

View sis's profile

sis

13 posts in 1977 days


#5 posted 819 days ago

Has anyone had trouble with the tambour. I bought the router bit set, but it doesnt seem to roll right.
thanks, sis

Have your say...

You must be signed in to reply.

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

HomeRefurbers.com

Latest Projects | Latest Blog Entries | Latest Forum Topics

GardenTenders.com :: gardening showcase