A finger joint, also known as a comb joint, is a
woodworking joint made by cutting a set of complementary, interlocking profiles in two pieces of
wood, which are then
glued. The cross-section of the joint resembles the interlocking of fingers between two hands, hence the name "finger joint". The sides of each profile increases the surface area for gluing, resulting in a strong bond, stronger than a
butt joint but not very visually appealing. Finger joints are regularly confused with
box joints, which are used for corners of boxes or box-like constructions.
Creation
Finger joints are generally created by using identical profiles for both pieces. They are made complementary by rotation or translation of the tool with respect to the workpiece. Typically a finger router bit is used, but spindle moulders can also be used. Manual cutting of finger joints is time-consuming and error prone hence rarely done except in craft pieces.
Applications
A tapered or scarfed finger joint is the most common joint used to form long pieces of lumber from solid boards; the result is finger-jointed
lumber
Lumber is wood that has been processed into dimensional lumber, including beams and planks or boards, a stage in the process of wood production. Lumber is mainly used for construction framing, as well as finishing (floors, wall panels, w ...
.
The finger joint can also be valuable when creating
baseboards,
moulding or trim, and can be used in such things as
floor boards, and
door construction.
See also
*
Dovetail joint
*
Miter joint
*
Box joint
*
Lap joint
References
https://www.nrcan.gc.ca/forests
{{Woodworking
Joinery
de:Holzverbindung#Zinkung_und_Gratung