Carbon Fiber Stiffened Warpless Walnut Tray??

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Project by Winthrop posted 03-21-2016 03:45 PM 676 views 0 times favorited 4 comments Add to Favorites Watch

I wanted a solid, not glued up, walnut tray, but of course it warped like crazy. I’ve been playing just a bit with carbon fibre, so I decided to flatten the tray it back out with clamps and laid unidirectional carbon fiber in epoxy in 3/8” deep 1/4” groves.

Any one tried this? Think it will hold up to Boston’s fluctuating humidity??

-- James, Annapolis, MD (

4 comments so far

View shipwright's profile


7029 posts in 2188 days

#1 posted 03-21-2016 04:43 PM

Interesting experiment. Carbon fibre masts are very strong but are meant to flex a little…..
Keep us posted.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees.

View Grumpymike's profile


1855 posts in 1706 days

#2 posted 03-21-2016 08:07 PM

Another way to remove the warp or cupping is to rip the wide board into three pieces, joint the edges and re glue them making sure that the grain goes back the same. The result is an invisible joint and a flat board.
Like Paul said, keep us posted on your results.

-- Grumpy old guy, and lookin' good Doin' it. ... Surprise Az.

View Texcaster's profile


1089 posts in 1064 days

#3 posted 03-21-2016 09:52 PM

Carbon fiber tubes and bars are common in guitar bass necks with five or more strings, used in conjunction with truss rods. I use CF alone to build double bass necks. (no truss rod) The tube is epoxied in the groove and caped with a timber filet to avoid sanding CF and inhaling very toxic dust.

-- Bill... "You have to wear a hat if you want to be in the band." Steve Earl

View Snipes's profile


82 posts in 1635 days

#4 posted 03-21-2016 11:18 PM

my guess is cross grain, no. A glued up board won’t cup?

-- if it is to be it is up to me

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