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Picture of Adirondack Style Dining Chair
Here is my first woodworking Instructables..

Step 1: Create sketch with SketchBook

Picture of Create sketch with SketchBook
First step was to come up with idea for chair..
I used SketchBook to come up with the idea.
I saved a screen shoot to use for the rest of my design.
 
That is a creative design on the chair and i like the statics free body diagram you did, but there is one inherent problem with the design of your chair - leaning back. When someone leans back in the chair, all of the dead load on the chair is transferred to the diagonal rear leg. This will create bending stress in this leg that the small cross sectional area will not likely be able to handle over a long period of time- especially poplar. In addition, the use of the pocket hole in this area also further weakens the wood at this intersection.

I would recommend increasing the cross sectional area of this leg to resist bending stress that will result from leaning back. Also, after cutting the angle in the leg, temporarily attach the down-leg to the diagonal leg with a splice and drill a hole through the diagonal leg into the down leg from underneath (in the same plane as the down leg to increase the area in shear in the dowel), and drive a wooden dowel and glue to support that joint. I hope this helps a little for the longevity of your chair.
mganpate3 years ago
great sir ... i would be like Make this design kindly share the pdf on mahesh.gan.143@gmail.com
lmihelcic (author)  mganpate3 years ago
you should be able to download the PDF from the top of the Instructables..