INCRA Twin Linear - Manual (Page 7)

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Zeroing INCRA Stop to the End of a Board
For most applications, you will be using your INCRA Stop on
the outfeed end of the INCRA Fence to control the length of a
cut relative to the front end of the board. Here is how to set
the initial scale position for this type of setup:
After installing the bit you wish to use, set the fence to
bit distance at about 1". Place a square cut piece of
scrap stock against the fence with the end of the board
against the infeed side of the bit. Turn the bit to find
the high spot.
Next, lock the INCRA Stop to the fence on the outfeed
side of the bit with the plastic stop strip as close as
possible to the end of the board. Adjust the position of
the stop strip until both the strip and the bit contact the
end of the board. Fig. 11.
You now have the choice of setting the sliding scale to
one of three initial positions:
In most cases, you will simply slide the scale to align
the 0" mark on the scale with the end of the INCRA
Stop nearest the bit. When set to this initial position,
the scale reading at any subsequent INCRA Stop
location will give you a direct readout of the total
length of the cut. (See Dimension “A”, Fig. 12.)
If you wish the subsequent scale readings to reflect
the distance from the front end of the board to the
center of the cut (Dimension “B”, Fig. 12), slide the
scale to an initial reading under the end of the INCRA
Stop equal to minus one half of the bit diameter.
Example:
If you are using a 1 ⁄ 2 " diameter bit,
complete Steps 1 and 2 above then slide the scale to
read negative
1 ⁄ 4 ".
If you want the scale reading for future INCRA Stop
positions to reflect the distance between the end of
the board and the outfeed edge of the cutter
(Dimension “C”, Fig. 12), then slide the scale to an
initial reading equal to minus the bit diameter.
IMPORTANT: Some stop setups may require that some
portion of the fence scale be slid from the outfeed fence into
the infeed fence or visa versa. DO NOT offset the fence halves
with a scale in this position, as it may damage the scale.
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Slide scale to 0" for a direct readout of Dimension “A”
Slide scale to “minus 1 / 2 of the bit diameter” for a
direct readout of Dimension “B”
Slide scale to “minus diameter of the bit” for a direct
readout of Dimension “C”
C
Fig. 12
Initial scale
setting
Fig. 13
Dual stop
operations
B
A
Fig. 11
Top view of stop setup
First:
Slide the board up to contact
the “high spot” on the bit
Second:
Lock the INCRA
Stop to the fence
and adjust the
position of the
plastic stop strip
to contact the
end of the board
Third:
Slide the scale to read one of
the initial scale settings as
described in Fig. 12 below
INCRA
Stop
1
2
3
Dual INCRA Stop Operations
Using the same setup process described above and a
second INCRA Stop, you will find the precise positioning
of mortises on a board quite simple. The
INCRA Jig
Projects and Techniques Book covers this technique fully
and includes several unique projects which feature dual
INCRA Stop operations. See Fig. 13.
A
B
A
C
A