Product Manual

Determine tenon length before cutting
● The key is to have a gap
between the end of the
tenon and bottom of
the mortise hole
● This can be done by
making the tenon 1/8”
to 1/4” shorter than the
mortise hole is deep
Hole Depth
1/8” to 1/4”
Gap
Tenon Length
Tenon Size
Desired Tenon
Length
Cut Mark
Log Diameter
Calculated Tenon Length
Cut Mark = [(Log Dia - Tenon Size) x .87] + Desired Tenon Length
Gather the following
information and use the
calculation provided
below:
● Tenon Size
● Log Diameter
● Desired tenon
length
Simple Tenon Length
Plug Length
Tenon Length
● Tenon length can be controlled by using
a stop plug in the tool body
● Cut off a piece of tenon to use as a plug
● Use the calculation:
Tenon Length = 2.9” - Plug Length
● Example:
2.9” - 1.9”(plug length) = 1” tenon
Example:
● Tenon Size = 1.5” (TAC1500)
● Log Diameter = 3.25”
● Desired Tenon Length = 1.75”
Cut Mark = [(3.25” - 1.5”) x .87] + 1.75”
Cut Mark = [(1.75”) x .87] + 1.75”
Cut Mark = [1.52”] + 1.75
Cut Mark = 3.27”
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