Guest Demonstrator August 2006:
Tom Fortenbery
Overview:
Tom
Fortenbery resides and has his studio in Rosedale, Indiana. He worked for IBM
and took an early retirement in 1987. After retirement he became serious about
woodturning and began taking classes from well-known turners beginning with Rude
Osolnik. He then began taking classes at Arrowmont in Gatlinburg, TN with many
recognized turners. He progressed from student status to assisting and then on
to teaching. He has taught at Arrowmont, John C. Campbell Folk School and
Appalachian Center for Crafts in Smithville, TN. He also teaches in his own
studio.
Tom has demonstrated for the Utah Woodturning
Symposium in Provo, UT, the Georgia Woodturning Symposium at Unicoi State Park
in Helen, GA and the Turn About Wood tool and supply store in Kansas City, MO.
He has also demonstrated for many local woodturning chapters across the country.
Tom feels very fortunate that he is able to turn
and not live off his turning. He does it for the pure enjoyment of turning and
passing along any tips and expertise that he has acquired over the past 20
years. He feels he is not a professional woodturner. For him, “It is just a
hobby that has gotten out of hand.”
Morning Session:
Tom
began his demonstration with a cylindrical piece of spalted sugar maple 5”x8”
that was mounted in a Vicmarc chuck with dovetail jaws. From this he planned to
make a hollow form with a contrasting rim and base of walnut. He first roughed
the cylinder into the approximate shape of the hollow form. In describing the
shape of a piece he stated that “there is a subtle difference between a piece
that sings and a piece that remains forever silent.” Tom left a substantial
amount of wood in the base portion of the piece so that there was stability when
hollowing. He alluded to the “golden rectangle” rule where the widest part of a
piece is two-fifths down from the top or three-fifths up from the bottom. This
usually gives the most pleasing shape to an object.
Once the shape was determined a dimple was turned
in the tailstock end of the piece so that hollowing could begin. Before
hollowing a one-inch wide diameter drill bit was placed in the keyless chuck and
the piece was drilled down to the desired depth of the bottom. This enabled the
piece to be more easily and quickly hollowed and prevented the creation of the
troublesome nubbin in the bottom that can easily form when hollowing without the
center drilled out. Hollowing was then begun with a handmade tool with
interchangeable cutters (made of planer blades). Tom keeps the tool a little
above center and angled so that he shear scrapes. He uses a Stewart type arm
brace with his hollowing tool to give support during the hollowing process.
Tom
replaced the partially hollowed piece with another that had been completely
hollowed and partially sanded. He makes his own sanding discs using Velcro
placed around a perpendicular sanding pad and cutting Velcro sanding discs to
fit around the disc and on the sides. This permits him to sand both the sides of
the interior and the bottom. Super glue was used as a sanding sealer. It was
applied with an applicator made of 50:50 polyester/cotton batting which was kept
on the applicator stick with masking tape. (Batting is available in most fabric
stores.) The batting wad was soaked with thin super glue (CA glue) and applied
to the inside of the piece starting at the bottom and progressing outward toward
the opening of the hollow form. However, before doing this Tom trued up the
outside because the piece had gotten out-of-round since it had been turned about
four days ago. He also refined the opening of the vessel to accept the
contrasting rim. Foam backed sandpaper was used to sand the outside of the
piece. The glue was then applied. Drying can be sped up, especially inside with
low volume compressed air. Accelerator can also be used. Once the glue is dry
light sanding can be done before lacquering. Sometimes a second coat of super
glue is needed, especially if the piece is punky. Once the inside was finished
the outer surface was further refined.
A
walnut rim was turned to fit the opening of the vessel. The wood disc for the
rim was placed in the chuck. The opening of the vessel was measured using
calipers and the rim piece turned to match this dimension. The outer diameter of
the vessel opening was then measured and the rim piece turned to match. This
produced a narrow flat area to rest on the flat edge of the vessel opening. The
under surface of the lid or rim was hollowed before being removed from the chuck
and glued to the top of the vessel. The vessel was then placed back on the chuck
and the rim piece glued in place (medium or thick glue). The outside surface of
the vessel was shear scraped and sanded to the final surface before finishing.
This was done while the rim piece glue-up dried. This completed the morning
demonstration.
Afternoon Session:
By the beginning of the afternoon session the top
rim piece was firmly glued to the vessel. It was then shaped and blended into
the vessel profile. A small lip was left at the junction of the rim and the body
of the piece. This was done to give crispness to the form. The rim was hollowed
through, opening it into the vessel. The opening of the rim was further defined
and it was blended into the interior surface of the vessel. The outer shape of
the rim was turned. This work was accomplished using the tool with the
interchangeable cutters. Sanding was then done using the foam-backed paper.
The base (foot) of the vessel was then further
turned after measuring the depth. The smooth outer wall curve was continued from
the vessel’s widest point to the base. The parting tool was used to define the
bottom edge of the vessel but it was not parted off at this time. Final sanding
was done, especially where a tool mark was found. Sanding progressed through all
the grits up to 400. All dust was blown away in preparation for putting on the
finish.
A large Q-tip type swab was again made for
applying the thin CA glue sealer. The glue was applied continuously so that no
line formed when stopping and starting again. If this had happened it would have
been very difficult to sand away. If it looks like the swab is beginning to dry
add more glue while continuing the application. Accelerator was applied very
sparingly. Once dry the surface was lightly hand sanded using 400 grit or
higher. This helped to remove any irregularities produced by the CA glue
application and produced a very smooth surface in preparation for another coat
of CA glue or the first coat of lacquer. In this case, lacquer was used as a
spray which dries in about 30 minutes but takes several weeks to cure. The
compressor was used to hasten drying as was increased lathe speed. Tom usually
uses three coats of lacquer. He uses the Beall buffing system to produce the
final surface. Steel wool was used to smooth the lacquered surface once the
lacquer was dry. It was then wiped and all dust blown away before the second
coat of lacquer was applied.
While the vessel was drying a second chuck was
used so that the base piece or foot for the vessel could be turned. This was
made from walnut – same as the rim piece. A hole was bored in the base. This was
done with the parting tool. A second cut was made on the base piece to fit or
match the outside surface of the vessel. By doing this a flat area was formed to
coincide with the flat rim on the base of the vessel. The base piece was then
parted off.
A jam chuck was then turned to fit into the
opening on the base piece that Tom had previously made. This piece was further
refined. The vessel was put back on the lathe and parted off. The base piece was
carved with Tom’s name using a vibrating engraver. It was then glued on the
tenon on the vessel base. Do not put the CA glue all the way around – leave a
small area of no glue so that air can escape when the two parts are pressed
together. Once in place twist or turn the base piece to spread out the glue.
This completed an interesting and informative
demonstration. A DVD will be available in the CMW library at the October
meeting.
--Bob Gunther
Tom's Introduction
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