INCRA Build-It STS Slot Mortiser - Manual (Page 3)

INCRA Build-It STS Slot Mortiser Kit Manual INCRA Build-It STS Slot Mortiser Kit Manual
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Slide the STS Slot Mortiser forward until the cutting wing on the cutter contacts the infeed faceplate stop. Now clamp a block of
3/4 ” scrap wood into the miter slot against the outfeed end of the Miter Slider, Fig. 13. This will set the forward or outfeed travel
limit. Now pull the jig back until the cutter contacts the outfeed faceplate stop and clamp a block of 3/4 ” scrap into the miter slot
against the infeed end of the Miter Slider, Fig 14. This sets the rearward or infeed travel limit.
Fig.13 Set Forward Travel Limit
Now, we need to locate the slot on your workpiece. To begin
we’ll set the distance from the end of the slot to the end of your
board. Simply slide either the infeed or outfeed faceplate stop
away from its current position the distance you choose. For
instance if you wanted to start the slot 1” from the end of your workpiece (after setting a 2” length of
slot), slide the outfeed faceplate stop to read 6” and tighten the
clamping knob,
Fig. 16.
Remove the remaining faceplate stop.
Fig.16 Setting Slot to Board End Distance
Set Distance from End of Slot to End of Workpiece Step 2
Fig.15
Slot to Board
End Distance
Fig.14 Set Rearward Travel Limit
2nd: Clamp stop block into
miter slot against end of
Miter Slider
1st: Slide jig
forward until cutter contacts
infeed faceplate stop
2nd: Clamp
stop block into
miter slot against
end of Miter Slider
1st: Slide jig back
until cutter contacts
outfeed faceplate
stop
Distance from
end of workpiece to
beginning of slot
Final stop
position
Original stop
position
Set Distance from Edge of Slot to
Edge of Workpiece
You’ll first want to zero the faceplate to the edge of the cutter.
Loosen the clamping knobs that secure the faceplate assembly
and slide it forward to contact the cutting wing of the bit.
(You may need to rotate the cutter to find the “high spot” of
the cutting wing.) Hold the faceplate assembly steady as you
slide the stop positioner up to contact the back of the faceplate
assembly’s base and tighten the clamping knobs. Note the
position of the stop on the scale in the top of the fence. (We suggest you slide the scale to read at one of the whole
inch numbers, or slide it to read at zero if you don’t mind some
of the scale hanging out of the end of the fence.)
To set the cutter-to-faceplate distance, simply move the stop
positioner away from the back of the base using the scale on
the top of the fence as a reference. Tighten the clamping
knobs, then slide the faceplate assembly back to contact the
stop and tighten the clamping knobs,
Fig. 18.
For example, if we start with
the stop positioner set at 8”
and then move it to 8-
1/2 ” along
with the faceplate assembly,
there should be
1/2 ” between
the faceplate and cutter.
Fig.18 Setting Slot to Board Edge Distance
Cutting the Slot
Now you can clamp your workpiece in place
and start the cutting process. Lower the cutter
until it is just flush with the top of the Build-It
throat plate. For horizontally oriented material,
place the board end against the faceplate stop
and clamp to the faceplate.
Always begin
and end each cut with the jig against
the outfeed travel limit block. Turn on
the router and, using your router lift’s crank
handle, raise the cutter
1/16 ” and slide the jig
between the two limit stops, Fig. 19. After
each cut cycle, raise the cutter 1/16 ” until you
reach the desired depth. You’ll have to count
the crank handle rotations to keep up with
how deep your cut is.
Fig.19 Cutting a Slot Mortise
Step 3
Step 4
Fig.17
Slot to Board
Edge Distance
3rd: Slide faceplate assembly
to stop and clamp in place
Stop Positioner
2nd: Using
scale as a reference,
slide stop away
by an amount equal
to desired slot-to-
edge distance
1st: Slide faceplate to contact
cutter, then slide Stop Positioner to
contact back of faceplate assembly
ALWAYS begin and end each
cut with jig against the outfeed
travel limit stop block
Clamp horizontal
material to faceplate
with end against
faceplate stop