Plans are from the Kreg website. I used cedar 5/4 decking instead of the 1x4's that the plan caled for. The 5/4 decking looked nicer and was cheaper. Although it seemed I had to be extra care when driving my screws in the cedar or I'd strip the hole out. Any one else have that problem? The chair itself felt a little "flimsy" until I tied it all together with the lag screws. Now it feels solid.