The Knee Brace Bracket is used for attaching a wooden knee brace to a Treehouse bolt. You can sandwich a 2x6 (or larger) board on either side, or as we prefer, get one solid brace such as a 4x6, cut a notch in the center, and fit the bracket into the middle of the wood.
Please consult with your professional engineer, arborist, or experienced tree house builder to ensure that you choose the right fasteners for your tree house project. Safety is #1.
Cut a 5/16" slot in a PT 4x6 or other wood beam as required by your design.
Mark Holes through the Bracket to ensure alignment. Then drill straight through with a 5/8" wood bit.
Insert Knee Brace Bracket into slot and install 5/8" galvanized carriage bolts (included with knee brace). Tighten until lock washer closes, but no further.
Cut a notch into the top of the knee brace so that it fits the platform in the desired spot. Reinforce area as necessary to ensure even support.
Press the bottom of the knee brace tightly against the tree and pre-drill a hole slightly smaller than the bolt you are going to use. Then turn the bolt in with a socket wrench (3/4" drive makes it easier) or a large pipe wrench.
View of finished knee brace from end
View of finished knee braces under treehouse
Excellent product and great shape upon arrival. 
