LumberJocks

Spring clamping or something like that...

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Blog entry by ocwoodworker posted 07-14-2010 05:49 AM 853 reads 0 times favorited 4 comments Add to Favorites Watch

I read an article awhile ago in Popular Woodworking on the advantages of creating a small camber in the wood to create a tighter joint when pressing several boards together to create a table top. The edges touch first then the middle comes together last during clamping. Anyone had any success with that. I am planning on making a walnut side table and would appreciate any tips.
Thanx

-- I'd like to believe Murphy's Law haunts my woodshop, because if it's Karma it would mean I had something to do with it. - K.R.



4 comments so far

View AaronK's profile

AaronK

1441 posts in 2931 days


#1 posted 07-14-2010 01:39 PM

yes, i’ve done it. it’s usually done for longer panels, since it’s going to be much more difficult to get sufficient pressure in shorter panels. there isn’t much in the way of tips I can offer other than how you get there… which depends on your tool of choice. with a bench plane you joint the edges as normal, the take a final couple light passes in the middle of the board. with a power jointer you joint as normal, then for the final couple light passes you apply light pressure on the cutters at the edges of the board, and more in the middle. you’re not going for a pronounced gap, just a hairline really. again, depending on the length of the table top, it might not be necessary or even possible to achieve this.

View jlsmith5963's profile

jlsmith5963

297 posts in 2815 days


#2 posted 07-14-2010 03:32 PM

Gary Rogowski, Contributing Editor at FWW describes the basics of
Spring joints .

-- criticism: the art of analyzing and evaluating the quality of an artistic work...

View swirt's profile

swirt

2118 posts in 2438 days


#3 posted 07-14-2010 08:35 PM

The discussion in the comments after the Rogowski article are interesting. The person sugesting that spring joints are myth cites kiln dried lumber as the cure….. he forgets / ignores that even kiln dried lumber breathes with the seasons.

I use a hand jointer and find them easy to produce because I start the planing in the mid section of the board, that prevents the rounding over at the ends which is harder to correct than a hollow middle.

-- Galootish log blog, http://www.timberframe-tools.com

View ocwoodworker's profile

ocwoodworker

209 posts in 2471 days


#4 posted 07-14-2010 10:00 PM

Thank you so much guys! Lumberjocks Rocks!!

-- I'd like to believe Murphy's Law haunts my woodshop, because if it's Karma it would mean I had something to do with it. - K.R.

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