QS Oak Raised Panels for Roll-Top Desk

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Forum topic by pastor_shane posted 09-17-2008 09:56 PM 1872 views 0 times favorited 5 replies Add to Favorites Watch
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29 posts in 4021 days

09-17-2008 09:56 PM

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


1602 posts in 3757 days

#1 posted 09-19-2008 02:34 AM

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


2131 posts in 3943 days

#2 posted 09-19-2008 02:45 AM

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

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%)

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29 posts in 4021 days

#3 posted 09-19-2008 05:11 AM

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

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2131 posts in 3943 days

#4 posted 09-20-2008 03:30 AM

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

View sis's profile


13 posts in 3675 days

#5 posted 01-20-2012 03:52 PM

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

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