Untitled - Wood Tools

skill
Builder
one side of the jig to keep it square.Then set the router
sled on top of the jig so the bit is over the exposed
edge of the workpiece. Now turn the router on, and
slowly slide the sled down the jig, and then back up.
Repeat this process across the entire width of the workpiece
(see Frg. l).When you reach the opposite edge of
the workpiece, the bit will actually cut into the side of
the jig, but that's okay. You need to do this to completely
clean up the edge.
Finish the Cut - When you're finished, unclamp
the workpiece, and slide it closer to the end of the jig
(about half the distance).Then reclamp it, and repeat the
process. The bit will cut deeper this tirne, creating a
larger bevel (Fig. 2) For the final pass, move the workpiece
all the way to the end of the jig (Fig 3).
ScarfJoint Glue-Up - Gluing a scarfjoint together
presents a couple ofchallenges. First, the beveled faces
of the two pieces tend to slip against each other.Also,
it can be difficult to keep the edges aligned.An easy way
to solve both problems is to build a simple L-shaped
assembly jig.The base of this jig provides a clamping surface
for the workpiece. And a fence keeps the pieces
aligned.To glue up the joint, simply follow the procedure
outlined in Figures 4 and 5 at right.
Planer Trick - When the glue ses, there's one optional
step you can take to produce a super-smooth face where
the scarfjoint comes together.That'.s to make a light pass
through the thickness planer with the joined boards.
A After gluing
up the moting
foces of the
scorf ioint, o
light poss on o
thickness
ploner mokes
the ioint line
olmost disop
peor ilnsef/.
The iig used to moke scorf ioints consisfs of three difbrenl
porfs: o long plp'vood bose lo hold he wo*-
piece, fwo bpered sides, ond o sled br he rouler
lhot "rides" on the ongled sides fsee lhe lllusffiion ot
rightl.
For o smoolh, oc€urob cut, ifs imporlonl ftot fie
bpered sides ore idenlicol. To occomplish thot, use
doublesided iope to tempororily gong the sides
bgefher. Then loy out the bper ond roughcut it on hE
bond sow. Noc, loint b he loyout line lo produce o
smocfh edge. Pull fie pics oporl, ond glue ond screw
them b the bose.
The sled hol the roufer is mounbd to is equolly
simpfe. lfs o piece ol3/{ plywood with o couple of
cfeots qttoched b he ends (llustrotionJ. Drill o I o
hole br bit cleqronca, ond oftoch fie rouler ic the sled
by running mqchine screws up through lhe countersunk
holes in the sled ond into he roubr bose.
woRKBENCH D JUNE 2004
3V2"
#6 counbrsunk
shqnk holes
NOTE: Jig shown will cut
on 8"-long bevel br every
1 " of boord thickness
lo
Side
l" hole
Cleqt
pftt x?/ln x7rrl
Roubr Sled
I| 3/t"
51