Operating and Maintenance Manual
38
©
HOFFMANN PP2-NCF
• Version 7.267 • 12-2017
16.3 Router bit adjustments
Hoffmann Dovetail Keys are designed to create permanent
and reliable joints in a wide range of wood products.
For optimum strength and reliability, it is important to
adjust the router bits properly.
The minimum cutting depth into the
miter face is
Size W1
3.5 mm
Size W2
5.1 mm
Size W3
6.9 mm
This is the minimum setting at which
the Keys will still create a tight joint.
If the material allows, a deeper
setting will increase the “draw” or
“pull” of the Key.
Incorrect:
If the router bit projection is set too
shallow, the Key is not able to pull the
miter faces together. An open joint is
the result.
Incorrect:
If the router bit projection is set too
far, the Key and/or the material can
split resulting in damage to the
material.
Final router bit adjustments are always made by moving the router motor in or out of the motor bracket as
needed. A small movement will make a noticeable difference (0.1
– 0.2mm).
You can check the depth of cut in the miter faces with digital calipers, often times only of of the two motors
requires an adjustment.
Do not try to fine tune the router bit projection by moving the bit in or out of the collet
– it is much easier,
more precise and faster to move the whole motor instead of only the bit.