Festool MFS Fence System Instruction Manual page 26

I plowed a 13mm deep groove
80mm wide so the saddle fits
snugly over the MFS profile
and snugly into the space on
the guide rail. That way the
profiles will project out behind
the guide rail at very close to
a 90 degree angle which will
add to your accuracy.
I then drilled a couple of
5.5mm holes in the sides of
the saddle aligned with the
center of the side "V" tracks
on the MFS extrusions. Slide
in a two hole "V" nut and fas-
ten the saddle with a 5mm
machine screw.
If you use the normally available hard-
ware store metric cap head screws, then
you can use a 4mm Allen key to tighten
and loosen all of the 5mm fasteners and
the 3mm Allen key supplied as part of the
MFS system for all the 4mm fasteners.
You could also get a bit fancy and use
some form of purchased or shop made
quick set 5mm thread handles.
Once the saddles are in place with the
screws still loose, put the saddle onto the
guide rail and use
a block of wood
to bring the end
of the MFS extru-
sion marked zero
up to be exactly
even with the
rubber edge on
your guide rail as
shown in this
photo. Since you
cut that rubber
edge with your saw and blade the first
time you used it this procedure will cali-
26
brate your "story stick" to your saw, blade,
and guide rail.
With the edges aligned tighten the side
screws on the saddle so you can remove
the MFS profile and saddle from the
guide rail and replace it, always keeping
the front edge of the guide rail aligned
with the zero mark on the profile. If you
want to be able to remove and replace
the saddles without reregistering them to
your guide rail, just slide another "V" nut
in place and lock it down against the "V"
nut you use to secure the saddle.
Festool offers a small bag of "V"
nuts and set screws as part
number 493235.
You can use just one profile if
you wish, but two will be faster
and far more accurate. If you do
plan to use two, then calibrate
the other one to your saw, blade,
and guide rail the same way.
You can use any of the MFS pro-
file lengths you wish. I find the one meter
(1000mm) length the handiest. If I want