Festool Domino Machine Instruction Manual - page 6

Depth of cut is controlled by a lever on 

the side of the Domino body (red arrow 

above and in detail below).  Settings 

are for depths of cut of 12, 15, 20, 25 

and 28mm.  This is the depth meas-

ured from the front of the fence to the 

bottom of the mortise.  Lift the black 

safety catch and move the green depth 

lever to align with the desired depth of 

cut.  To allow for some glue build up in 

the bottom of the mortise as the tenon 

is inserted, the actual length of the Fes-

tool supplied tenons is about 1.5mm 

shorter than the depth of the 

corresponding mortise.

The top green knob turns to 

set the desired width of cut.  

Three settings are provided.  

The narrowest width (the set-

ting shown below) matches 

the supplied domino tenon for 

each domino (tenon) thick-

ness.  The 5mm thick domi-

ons are just under 19mm wide 

scaling up to the just under 

23mm width of the 10mm 

thick dominos.

At the minimum width of cut setting 

(the way the width knob is set in this 

photo) the cutter bit oscillation is 

13.7mm.  With a 5mm cutter bit the 

overall cut mortise slot will be 13.7 + 5 

= 18.7mm wide, nominally 19mm.

Move the knob to the intermediate 

width of cut setting and the oscillation 

increases from 13.7mm to 19.2mm 

resulting in a slot 24.5mm wide for the 

5mm cutter bit.  The tenon still fits tightly