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Bent Wood Arbor

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Project by David posted 2319 days ago 1521 views 2 times favorited 7 comments Add to Favorites Watch

Nine layers of 3/4” x 6” wide boards; bent and glued with waterproof glue. Band sawed to form smaller radius on lower edge. Then do it all over again for a second one. I glued on a layer each day as it took quite a bit of force to do more than one and it was like wrestling a snake!

It’s held together with only the glue. No nails or screws. The glue was polyurethane so it got a bit expensive but it’s good! stuff. Of course the cross pieces on the top are screwed on and the framework all screwed together. I faced the 4 pressure treated 4×4 posts with cedar fence material. It’s been out in the winter 3 years now and no indication of any delaminating. I’ll take some more photos and somewhere I have pics of the bending operation if I can find them. I drew it on Autocad (I taught Autocad) but had to manually draw a pattern for the arch. Had to swing a long compass on the floor; put some butcher paper on a sheet of plywood and drew it all out. I bent the lams around a piece of 2 by cut to the curve I wanted. I didn’t compensate for spring back as the results only needed to look good. Just kept adding layers until I had enough then ran it thru the planer ( steering it as it feed thru due to the curve ). I have a 16” Grizzley Bandsaw so cutting the curve was easy but the end pattern was a bear as it took 2 of us: one to steer at the blade and the other on the outboard end walking around according to directions given. The cut was a little rough and needed some clean up work. Belt sander did wonders.

I finally found the photos of the glue up. I started with a 2X12 that had the curve cut in the edge. Not very wide to start bending around but it worked. It is a true arc made with a very long stick for a compass. The radius was something like 7 or 8 feet. I designed it in autocadd but still had to lay it out.

First day I bent only two and let them cure overnight. I used polyurethane glue. Each layer is a true 1 inch thick: not 3/4” or 1 1/2”. Every day I glued on a new layer and clamped it. When I finally got so thick that the hand screws wouldn’t reach, I layed it down and went to the bar clamps.

-- Islandwoodworker@Gmail.com





7 comments so far

View Scott Bryan's profile

Scott Bryan

27251 posts in 2426 days


#1 posted 2319 days ago

David,

Your description of the project does make it sound difficult. From the picture you did a good job on it.

Thanks for the post.

-- Challenges are what make life interesting; overcoming them is what makes life meaningful- Joshua Marine

View Lee A. Jesberger's profile

Lee A. Jesberger

6646 posts in 2583 days


#2 posted 2319 days ago

Hi David;

Nice job on the arbor. My wife’s been asking me for one of those for a long time.

Lee

-- by Lee A. Jesberger http://www.prowoodworkingtips.com http://www.ezee-feed.com

View jcees's profile

jcees

946 posts in 2403 days


#3 posted 2319 days ago

Some closeups or progress photos would be cool in the future. Nice job. Classic design. Did you use any other fastening device other than glue on the lamination? Did you get much springback? How long has it been in service?

always,
J.C.

-- When one tugs at a single thing in nature, he finds it attached to the rest of the world. -- John Muir

View rikkor's profile

rikkor

11295 posts in 2478 days


#4 posted 2318 days ago

I would like to see a more detailed shot of the lamination, too.

View GaryK's profile

GaryK

10262 posts in 2592 days


#5 posted 2318 days ago

Looks like a perfect setting for it.

-- Gary - Never pass up the opportunity to make a mistake look like you planned it that way - Tyler, TX

View David's profile

David

176 posts in 2319 days


#6 posted 1807 days ago

Here’s a couple of shots of the glue up. They are all that I took
http://picasaweb.google.com/Islandwoodworker/Arbor##

-- Islandwoodworker@Gmail.com

View a1Jim's profile

a1Jim

112001 posts in 2181 days


#7 posted 1807 days ago

Super arbor looks great

-- http://artisticwoodstudio.com Custom furniture

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