here for a printer friendly
version of Tip - Pg 1-4, Pg
Sizes and Construction
The three available biscuits are shown here.
biscuits are produced from select grades of beech. For maximum
strength, the grain is oriented at a 45° angle to the long
axis of the biscuit. During production, biscuits are exposed
to many tons of pressure which compresses the fibers and produces
a waffle-like surface for better glue absorption and adhesion.
is applied to the biscuits, the moisture in the glue causes
the biscuits to expand by about 15% of their original thickness
and the joint becomes tight. Since this expansion occurs very
quickly, glue should never be applied to the biscuits until
you are ready for final assembly. Biscuits should also be
protected against water or extremely high humidity. A coffee
can with a tight fitting lid makes a good storage container.
are available in three different sizes to meet a variety of
23-3). All biscuits are 5/32" thick.
are 1-3/4" x 5/8". They are best for joining smaller workpieces
and for edge-to-edge assemblies where high stress is not anticipated.
They are also useful for joining narrow pieces such as cabinet
are 2-1/8" x 3/4". They are recommended for general purpose
joinery on all types of projects.
are 2-3/8" x 1". They are recommended for use on larger projects
or joints--such as a table skirt and leg--which will be subject
to high stress or twisting forces. They also provide greater
penetration and a larger gluing surface, so they are well
suited for plywood or particle board applications.
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