PH/JIG/M
-7-
Please note these measurements are
a guideline only. Adjustments may
need to be made for different timber
thicknesses. Trial cuts should be made
in waste material before drilling into
the workpiece.
OPERATION
Short Base
For timber thicker than 22mm the short base
is recommended to centre the pocket hole in
the timber. This base is also recommended for
use when repairing existing joints which need
strengthening. For timber 22mm to 32mm thick
set the collar 98mm from the drill tip and the
base 7mm from the edge of the timber.
For timber 32mm to 38mm thick set the collar
110mm from the drill tip, and the base 19mm
from the edge of the timber.
7mm
19mm
98mm
110mm
Short base fitted
Short base fitted
Material Thickness
Long Base
For timber from 16mm to 38mm the long base is
used. If the material is thinner than the optimal
19mm thickness the screw will not exit in the
centre and likewise if thicker material is used.
Even though the screw does not exit in the
centre a tight joint will still be created. As
the material gets thicker however it may be
advisable to put the pocket holes on multiple
sides of the component or use the short base.
When using the short base for repair
work ensure that the pocket hole and
drill heights are set correctly. This
ensures the drill or screw does not
come right through the component.
Before any repair work is carried out
it is advisable to drill a test pocket
hole and test a screwed joint on
similar material thickness beforehand.
