Guest Demonstrator May 2003:
Gary Sanders
Beautiful
Boxes
Gary is known for his beautiful and unusual
boxes, which retail in the $300 to $900 price range.
Most are about 10 inches in maximum diameter, wing tip
to wing tip. They are composed of 4 parts: FINIAL,
LID, TOP and BOTTOM. The TOP is where the
most interesting and unusual turning and carving is
done, with design inspirations coming from automobile
mag wheels, jewelry, cathedral ceilings, logos,
modern furniture, etc. Only kiln dried wood is used,
for stability.
The piece to the right shows a typical approach of alternating light
and dark woods; the slotted TOP is dark, of walnut or
cocobolo. The BOTTOM is about ½ the total size,
or about 5 inches in diameter, and is suspended about
3/8 inch off the surface by the two feet at the ends of the
TOP. It is glued to the TOP after turning a lidded
box joint that snap fits it in place. The LID and FINIAL
are last. Gary prefers to use a variety of chucks
to hold all his turned pieces.
Gary started the demo by using a 4-jaw chuck
with two opposing jaws removed. He centered a
piece of walnut 2 inches thick by 3 inches wide by 10 inches long in this
chuck, and turned a 1+ inches deep by 1 ½ inches dia. round
mortise with a recessed tenon about ¾ inch dia. in the
center. This walnut piece was
formed to become the TOP.
He mentioned that the 2 jaw
chuck approach also allowed
easy repositioning of the TOP for
off-center turning, which would
allow creating a piece with 3 or
more boxes along its
length, limited only by the
distance from lathes
center to bed.Next, he superglued
two pieces of scrap poplar,
one to each side of
the walnut. These had
been bandsaw cut with
rounded ends so that the
whole assembly of 3
pieces was 10+ inches dia. and
ready for further turning.
The scrap pieces prevent
tearing and other turning problems as one completes
the turning of the TOP.
Next, he mounted a piece of scrap poplar 3 inches
square and 2 inches deep in a 4 jaw chuck, and
turned a shallow tenon to fit the walnut mortise (1
½ inches dia.) and then trued the remaining block to 3 inches
diameter as a gauge for the LID.
Then, the rough TOP was reversed and press fit
onto the waste block tenon, the tailstock brought up
to clamp all in place, and what would become the
upper surface of the TOP turned on the headstock
side, with a bowl gouge held at an acute slicing angle
(end of handle very low) to give smooth cuts and
eliminate tearout making it ready for final fine sanding.
From the tailstock side he
used a traditional diamond parting
tool, set in a downsloping
handle for better control, and
plunge cut at a 45 degree angle
to remove a center core from the
walnut. This scrap piece contained the ¾ inches dia.
tenon that had been earlier made from the other side. (It
might make a nice spinning top, or a LID for
a different box!) The tailstock was then removed.
Gary has made a number of small tools, for undercutting when doing fine work,
from ¼ inch and 3/8 inch diameter high speed steel drill rods. One is like a short tipped
screwdriver bit, another with that type design but the cutting edge is curved. One
scraper was even made from a dart with a bolt screwed into the de-feathered rear
and the tip carefully ground back to form a tiny scraper!
Next came the tricky part of forming the
undersurface of the TOP, with careful undercutting done after a
bowl gouge does the initial hollowing work.
(Time did not allow for deep undercutting.)
During this process a very unexpected safety
lesson was learned. The tip of the bowl gouge caught at the
glue joint between walnut and poplar, and the bowl
flew apart. The loose poplar piece instantly whacked into
the CMW club's Plexiglas safety barrier, brilliantly
put in place by two members, or at least one audience
member would have received a painful if not damaging
impact! The other part flew off and behind Gary
against a far wall. Miraculously nobody was hurt AND the two parts fortunately were OK and reassembled
along the same glue line, with even greater care,
using plenty of medium density superglue and spray accelerator.
After a short breath-catching break, the demo continued.
Here you can see the TOP (with one piece of the scrap
poplar removed by sawing along the glue joint
from both ends) with the initial undercutting done by bowl gouge.
Note the hollow tenon ready to receive the BOTTOM at a later
time. One trick he uses is to cut such tenons inward at a slight
angle, and then slightly round its edge so that the inner mortise
lip of the BOTTOM piece, also tapered slightly inward toward the
upper rims edge, will snap into place when pressed on (and later
glued with 5 minute epoxy). The upper part of the TOP is about
3/16 inches thick, and Gary spent considerable time with calipers, pencil
marks, and fine cuts to achieve that even thickness.
The two walnut ends (that look like arrowheads) would
normally be recess cut to a much greater degree with
Gary's special tools, but time did not permit this work
that day. Gary likes a slightly extended tenon with
internal mortise on the underside of the TOP to give
added girder strength in that area, since it is so
close to the side edges, instead of mortising the TOP and
fitting the BOTTOM tenon directly therein.Some tricks he passed along: 1) use a 3/16 inch drill bit
as a time saving gap tester between the outer tips of
the double end calipers to see how bowl thickness is
coming along ... and always measure on the hardwood
(walnut in this case) instead of the softer poplar scrap.
2) You can sense the smoothness of the curve, as
undercutting is done, by stopping the lathe and letting
the light reflect off the glue line. It will show abrupt radius
changes. 3) A small, round skew will not edge-catch
inside small diameter mortises.
At this point Gary carefully parted through the TOP
inside the tenon in the center, and removed the core,
where the LID would later fit.
It is at this state of completion that the design for
cutouts and shape of the TOP would be penciled onto
the upper surface. Time did not allow this work to be done.
He uses a variety of plastic mechanical drawing
templates to match the layout to his concept for the piece.
A tapered burr with spiral cut, from J&L Industrial
Supply (1-800-521-9520, or
http://www.jlindustrial.com),
in a drill press set for high speed, is used to make
the slots and other cutouts, by moving the wood TOP on the
drill press table very slowly under and into the
tapered burr. A bandsaw with 10 tpi blade cuts the outer
edges of the design, with the table tilted for sloping
cuts that add a 3-D effect. Jewelry files, sandpaper
running 320 to 1000 grit, then jewelry cloth 2500 to 4000
grit, produce a polished surface finally finished with
oil and wax. 30 to 40 hours would normally be in
vested so far ... too much for a one-day demo.
So, to see the inner profile of the TOP, Gary next used
a skill saw to cut in from both ends along the glue
line and snapped off one of the side pieces of scrap poplar.
This allowed a side view from
which the shape of the maple Bottom could be determined
and then turned.
Gary chucked a piece of maple about 2 ½ inches thick
and trued it to 5 inches diameter. Then he cut the mortise to
snap fit into the tenon located underside of the walnut
TOP, and shaped the upper maple surface to closely
match the adjacent underside of the walnut TOP. He
then bowl gouged a cavity to be the jewelry holding
inside of the BOTTOM. The inner lip was tapered so
the outer edge was slightly smaller, and the BOTTOM
unit would then snap fit onto the TOP's tenon.
Using a plastic jawed chuck he then positioned the
BOTTOM thereon, plastic jaws expanding outward for
a grip inside the BOTTOM's jewelry well. He used a
depth gauge to determine the total height of the BOTTOM,
allowing for it to float 3/8 inch above the table surface,
suspended by the two arms of the TOP. He
then turned for total height and outer shape. Normally
it would then be sanded, snap fit, and epoxy
glued at the rim into place under the walnut TOP.
Using a 4 jaw chuck on a small piece of maple, Gary
turned the 3 inches dia. TOP, with its tenon undersized for a
loose fit so it would not bind some months or years in
the future as further wood drying occurred. In turning
the LID's underside he hollowed it somewhat, but left
the very center thicker, where it would later be drilled
from the other side for the walnut FINIAL.
This TOP was flipped over and inserted into a jamb
chuck made of scrap wood, and the top of the TOP
turned to size and shape. A stub drill in a chuck in
the tailstock was brought up and a FINIAL hole
drilled in the TOP, just deep enough for the FINIAL's
small tenon.
Finally, a small square of walnut was chucked
and the tiny FINIAL delicately turned, tenon outward.
The remaining square was drilled for the tenon,
and the FINIAL reversed and set into the
scraps hole. Finish turning of the FINIAL tip was
slightly rounded so as to not later pierce the box
owners hand if placed on the tip of the FINIAL by
accident! Talk about attention to detail!
The four pieces were assembled (not glued as
this was a demo) and here is what the (unfinished)
end result looked like:
Gary hopes to complete the TOP and send this
unique box back to CMW.--Bob Heltman
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