Kneeling/Posture Chair

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Project by Ron Stewart posted 01-01-2016 10:11 PM 6298 views 6 times favorited 7 comments Add to Favorites Watch

My wife finds sitting for long periods on our computer chair uncomfortable, and she wondered if one of those C-shaped or X-shaped posture/kneeling chairs would be better. The theory is that they shift some of your body weight to your shins and put your spine in a more natural position.

We couldn’t find one to try in any of the local office supply stores, so I searched the web for plans, and I found a nice set at The chair has three height settings, with provisions for more if needed (by drilling more holes for the X-axle). I basically followed the plans, but I widened the seat and knee boards and support cylinders from 14” to 18”. 14” just seemed too narrow.

Here are photos of the finished project. Because I built this chair as an experiment, I didn’t finish it (or agonize too much about the router/saw burn marks you may spot in the photos). My wife thinks it’s going to work out, but we won’t know for sure until the holidays are over and she uses it for an extended time. Both the seat and knee boards are removable, so I can apply a finish later without risking messing up the fabric.

The support cylinders are 2” diameter poplar (I think) dowels.The other structural parts are 2” x 1 1/2” oak (created by laminating pairs of 2 1/2” x 3/4” hobby wood from Lowe’s or Home Depot) and then ripping
to 2” width. The seat and knee boards (hidden by the upholstery) are made of 3/4” birch plywood and padded with 3” foam.

Building the chair wasn’t very difficult. I made good use of a 2” diameter Porter Cable Forstner bit I bought for the project. Figuring out how to cut the acute angles took some puzzling over, but a Google search took care of that.

February 14, 2016 Update
I promised an update, and here it is (very late). The bottom line is that the chair didn’t work out for my wife. She said it didn’t feel all that different from a regular chair unless she used the highest seat setting. Even then, she said it didn’t transfer enough of the support to her shins.

I’ve also put in some time in it. In my case, I tried both the lowest and middle height settings, and the I found the weight distribution to be very different at either setting. (Maybe it’s because I weight a lot more than her.) It was comfortable enough, but I still prefer our normal office chair. One noteworthy aspect of this type of chair is that it’s best for very focused work. It’s not good for reaching over or behind to grab a book or scrap paper, and you can’t sit on it and tie your shoes, etc. It might work in combination with an normal chair, but who has room for two chairs?

I’m not sure what I’ll do with it. Maybe I’ll see if somebody at my workplace can make use of it, or try to sell it on Craigslist.

-- Ron Stewart

7 comments so far

View greg48's profile


588 posts in 2178 days

#1 posted 01-02-2016 02:42 AM

I don’t believe I’ve seen this before. Perhaps you could update this posting after the wife takes it around the block a few times.

-- Greg, No. Cal. - "Gaudete in Domino Semper"

View Hawaiilad's profile


2885 posts in 2442 days

#2 posted 01-02-2016 03:50 AM

Yes I would also be interested in the final try out. I have never seen one before

-- Larry in Hawaii,

View Ron Stewart's profile

Ron Stewart

40 posts in 1925 days

#3 posted 01-02-2016 04:19 AM

Sure thing. I’ll post an update in about two weeks after she has a chance to use it a bit.


-- Ron Stewart

View tichtot's profile


37 posts in 463 days

#4 posted 01-02-2016 05:40 PM

It really works. :) A familiar programmer uses such a chair.
Thanks for sharing.

-- Tichomir Toth, Slovakia,

View clieb91's profile


3491 posts in 3356 days

#5 posted 01-02-2016 07:49 PM

Nice looking. I used to have one of these years ago. They are comfortable for quite while.


-- Chris L. "Don't Dream it, Be it."- (Purveyors of Portable Fun and Fidgets)

View majuvla's profile


8714 posts in 2288 days

#6 posted 01-03-2016 08:16 PM

I had opportunity to try such chair and I was surprised how comfortable it is. I like the fabric too.

-- Ivan, Croatia, Wooddicted

View SteveGaskins's profile


621 posts in 2008 days

#7 posted 01-04-2016 01:20 AM

Nice, real nice.

-- Steve, South Carolina,

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