This weekend I watched part of DIY’s Project Treehouse, which covered the construction of a treehouse from start to finish. During the show, they used a piece of hardware that caught my interest: the Garnier Limb (GL). Michael Garnier operates a treehouse bed and breakfast in Oregon, and he designed the Garnier Limb — a piece of hardware that can be threaded into a tree — to be a mounting point in the construction of tree structures.
The threaded, 1-1/2″ diameter rod screws into a hole made by the special drill bit pictured below. The GL can then serve as a starting point to hold beams, hang wires, or mount other hardware. Some use it as the base for floating joints that allow the treehouses to flex on their supports when the tree sways in the wind. This piece of custom hardware has become a common tool in treehouse construction.
Perhaps more unique than the GL is Garnier’s personal story. Apparently, he battled the county government for ten years to get the building permits for his treehouses.
Garnier sells the hardware through his own website, and a single GL can run $110. The specialty drill bit costs $300 to purchase, or you can rent it for $50 a month.