Operating and Maintenance Manual
©
HOFFMANN MU3-P & MU3-PD
• Version 7.205.00 • 01-2018
15
11
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.
X
The medium or factory settings for the router bit
projection (measurement “X”) are:
Size W0
2.3 mm
0.0906”
Size W1
3.5 mm
0.1378”
Size W2
5.1 mm
0.2008”
Size W3
6.9 mm
0.2717”
Size W4
12.1 mm
0.4764”
These are 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 as needed.
A small movement will make a noticeable difference!
We recommend the use of our Digital Multi Gauge (W20001300)
for precise adjustments.
Tip:
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.
