INCRA HingeCrafter - Manual (Page 6)

Install the Fixed INCRAment™ template from your INCRA Master
Template Library that corresponds to the hinge barrel diameter you
have selected. For example, if you selected the
1 / 2 ” hinge barrel
diameter, use the Fixed INCRAment™ template with 1 / 2 ” spacing
(Template #47). Slide the template to position cut #1 on the template
directly under the hairline cursor,
Fig. 15.
Cut The Hinge Knuckles
Clamp the two blanks back to back to your INCRA Right Angle Fixture
as shown in
Fig.16 and mark the “fence” edges of the pieces. Turn
the router on and take a couple of passes to sneak up to cut #2 on the
template. Proceed by making cuts at each of the even numbered blue
cut marks on the template. Turn off the router.
Unclamp the two blanks and flip to cut the opposite ends. Before
clamping, make sure that the marked “fence” edges are against the
fence. Now proceed by making cuts at each of the odd numbered
blue cut marks on the template beginning with cut #3,
Fig. 17.
Your HingeCrafter is equipped with four different bushing sizes, one
for each barrel diameter (
3 /
8
”, 1 / 2 ”, 5 / 8 ”, and 3 / 4 ”). The spacing set
for the bushings within the HingeCrafter makes matching the barrel
diameter to the correct bushings easy. Just find the bushing section
that allows your hinge knuckles to slide in between the bushings.
After identifying the correct section, clamp the HingeCrafter in a
bench vise as shown in
Fig. 18. If you don’t have a bench vise, just
clamp the HingeCrafter to the corner of your workbench to allow
drilling from both sides of the fixture.
Slide your hinge blank into the drill guide as shown in Fig. 19 and use
the thumbscrew in one of the threaded holes to clamp the hinge blank
in place. To protect the hinge, slide the provided metal clamp pad
between the hinge and the thumbscrew before tightening. Make sure
that the hinge blank is pressed firmly and squarely into the bushings
before tightening the clamping thumbscrew.
Install the provided #30 (.128”) drill bit in a hand drill and drill the
hinge blank,
Fig. 20. Clear the chips from the drill bit often. If
the chips are not cleared from time to time, the drill bit will load and
create tearout on the backside of the knuckle, or worse, crack the
hinge. Remember, a clean drill bit drills while a loaded drill bit just
pushes hard. For hole position accuracy, never drill more than one
knuckle beyond the last bushing of the drill guide. To complete the
hole, unclamp and reposition the hinge blank, then drill through the
opposite end of the drill
guide.
IMPORTANT:
Whenever
repositioning the
hinge blank, always
blow sawdust and
wood chips out of
the drill guide before
reinserting the hinge
blank.
FIG. 15
Install Fixed INCRAment™
template
FIG. 16
Mark fence edge
on blanks
FIG. 17
Cut knuckles
FIG. 18
Clamp
HingeCrafter
in vise
FIG. 19
Clamp hinge
blank in
HingeCrafter
FIG. 20
Drill knuckles
6 INCRA Woodworking Tools & Precision Rules
DRILL HINGE KNUCKLES
Install Fixed INCRAment™
template that matches
hinge barrel diameter
Slide template cut #1
under hairline cursor
Clamp stock oriented
as shown to Right
Angle Fixture
Use odd numbered blue
marks for this end
Use even numbered blue
marks for this end
Metal clamp
Thumbscrew
To avoid tearout,
clear chips from
drill bit often