After all the veneers are edge glued and the glue squeeze
out scraped off it’s time to run them through the thickness sander. This is makes sure they are completely flat
and the same thickness. Right now, they
are a bit under 1/8” thick. When
material is this thin sometimes the drive belt on the sander gets sucked up
against the sanding drum. When that
happens, the drum tries to sand the drive belt smooth to the degradation of
both. The solution is to use a sled to
increase the distance between the drive belt and the sanding drum. Here I am using a piece of cherry about 1 ¼”
thick and 40” long. The end has a piece
of wood that stands about 1/16” above the cherry acting as a backstop. You can see what I mean in the photo below.
After that the piece to be used for the base is run
through the surfacer to get rid of the bandsaw blade’s rough cut and bring the
thickness down to just a little over ¼” thick.
They are then crosscut a little long and are ready for glue-up. That process is similar to the edge
gluing. The same flat base with plastic
laminate on it is set on the workbench.
My sized cedar base comes next then glue is spread on the base with a
toothed glue spreader. The veneer is centered on the base and a 6-mil piece of polyethene is laid down on
it. On top of the polyethene an oak plank
or caul about 1 ¼” thick is added. Last
a whole bunch of clamps are used which along with the caul provides even clamping pressure.
While the glue cures on the veneer/base it’s time to
finally cut the legs to their final length so they are flush with the top
rails. Rather than using a ruler to
measure the length and in doing so risk an error a marking knife shown below is
used to slice a thin cut in the leg at the exact height required. The result is
the top photo. After taking out the rail
you can see the cut which just happens to be on my pencil mark.
Once marked the legs are cut using the chop saw. Here is what the leg, top
rail and spindle look like assembled.
After all the veneered panels are glued to their bases
they get trimmed. On the left is a
trimmed panel and on the right one before trimming. If the veneer shifts on the base during the
glue up the base edge gets made parallel to the veneer using a hand plane. That’s followed by a couple of passes through
the table saw to trim the base flush with the veneer. Last it to trim the ends flush and square with
the chop saw.
Once the veneered panels are trimmed and squared, I need
to bring the thickness down to fit the grooves using the thickness sander. Right now, they are about 1/16” too
thick. First step is using 80 grit paper
make a couple of passes on the panel’s back side so it is parallel to the front
and 1/32” too thick. Next is to change
the paper to 220 grit and sand the veneered face smooth. Last is sand the back side until the panel
easily fits in the groove. It can’t be
at all snug because the panels will have a lacquered finish applied before they
are put in place and space needs to be left for the thickness of the
lacquer. I learned this the hard way
when making an antique muzzle loading rifle (top photo). I had very carefully inlayed the brass
hardware with the stock unfinished then once finished the brass pieces would
not fit in their recesses. Anyway, the
bottom photo is what the panels look like all trimmed and squared but not cut
to final width and length. That will be
done after nearly all the base’s edges get routed with a 1/8” radius roundover.
While the routing and finish sanding is being done the
veneered panels will be clamped between a couple of thick flat straight
boards. With all the work that’s been
put into them I want them to stay flat and not warp. As the wood is mostly quarter sawn and
everything was dry it probably wouldn’t happen but better safe than sorry.
On a side note, ever wonder how I get the colors in the
photos to match when my shop has a mix of incandescent, fluorescence tube,
twisty compact fluorescent, LED, electronic flash and natural light? My secret weapon is a standardized gray
card. When in doubt it gets included in
a shot after the image is framed and the exposure set. Using that known shade of gray the color
balance of the photo as a whole can be adjusted to it.
Next Up – Veneer Panels Part 2 Routing Edges &
Slotting Rails
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