Incra Twin Linear, Owner'S Manual

13

Attach subfence to infeed fence

Place the (2) 

1

/

4

- 20 x 

3

/

4

" socket head cap screws

with washers through the holes in the subfence and loosely

attach the 

1

/

4

- 20 rectangular nuts. (Fasteners supplied in

the auxiliary fence hardware pack)  Slide the subfence onto

the infeed fence so the fasteners are captured in the T-slots.

Move the subfence forward until stopped by the outfeed

fence and tighten the fasteners, Fig. 23. Now fine-tune the

fence offset so that the subfence is flush with the outfeed

fence. Always make sure to tighten the black thumbscrew

that ties the two carriages together after making any offset

adjustment.

Position fence for initial profiling cut

Loosen the mounting screws that secure the

subfence about 

1

/

2

turn and slide the subfence back away

from the outfeed fence. Move the TWINʼS fence up to the

cutter and position it so the rear face of the subfence is in

line with the approximate center of the cutter. See

overhead view, Fig. 24.

Make the profiling cuts

Turn on the router and using a good rubber soled push

block advance the subfence forward into the cut. When the

subfence touches the outfeed fence, back the subfence out of

the cut and turn off the router. Unlock the carriage clamp and

move the Twinʼs fence back about 

1

/

8

". Relock the clamp,

then repeat the cut. Continue this process until you have cut

completely through the subfence.

Slide the subfence into final position

Now you can slide the completed subfence into its

final position on the infeed fence and tighten the mounting

screws. Final positioning should always be done with the

router turned off and the carriage clamp locked.

CAUTION: The nature of zero clearance places the

subfence very close to the cutter. NEVER attempt to

move your fence or make any adjustments to the setup

until the router bit has come to a complete stop.

5

6

7

If you want to add zero clearance to the 

outfeed fence as well, make two of the 

subfences as described above. Make the profiling

cuts on both pieces from the infeed side. NEVER

make the profiling cut by sliding the subfence into the

cut from the outfeed side.
When cutting what will later become the outfeed

subfence, either drill and counterbore after completing

the profiling cuts, or make sure the counterbore faces

the infeed fence during the cut. The end of the

subfences above the profile will need to be trimmed

off so they can close around the cutter.

4

Fig. 22

Offset infeed fence

3/4" 

Fig. 23

Attach subfence to infeed fence

1

/

4

– 20 x 

3

/

4

" 

socket head cap screw

1

/

4

– 20 

rectangular nut

Fig. 24

Position fence

for initial

profiling cut

Stainless steel washer

Rear face of

subfence in

line with

approx. center

of cutter