For about $30 you can build your own modern Adirondack chairs! This is an easy build that shouldn't take too long, and the chair is super comfortable and sturdy! Free plans by Ana-White.com
3 - 2x4 @ 104-5/8" long (OR 4 - 2x4 @ 8 feet long or 92-5/9" long)
1 - 1x10 @ 10 feet long*
4 - 2-1/2" Kreg Pocket Hole Screws
24 - 2-1/2" long self tapping exterior screws (look for the screws with the star bit heads, can be up to 3" long)
30 - 1-1/2" long self tapping exterior screws (same type as the longer screws, can be slightly shorter or longer (up to 2"), these screws are just used to attach the seat boards to the frame)
*If building more than one chair, you only need 9 feet of 1x10 boards per chair. So for two chairs, you could purchase one 8' long 1x10 and one 10' long 1x10.
5 - 2x4 @ 19-1/2" - legs and horizontal supports
2 - 2x4 @ 31-3/4" - arms
2 - 2x4 @ 33-1/4" - both ends cut at 20 degrees off square, ends ARE parallel, long point to short point measurement
2 - 2x4 @ 32-3/4" - back supports
2 - 1x10 @ 22-1/2" - seat
3 - 1x10 @ 19-1/2" - back
It may be easier to pre-finish your boards before cutting.
Work on a flat level surface.
Place the remaining 2x4 @ 19-1/2" long under the back of the chair as shown in the diagram.
Place one seat support in the chair and hold flush to the bottom of the stringer.
Attach with screws to the stringer and to the back support.
Move to the other side of the chair and repeat with the second back support.
Remove the 2x4 @ 19-1/2" long.