Guest Demonstrator February 2003:
Dennis Liggett
Turning with a Twist
Dennis is from Northwest Missouri. After college he worked in a marketing
position with IBM. After retiring from IBM he began selling his woodturnings in
galleries and at art fairs throughout the Midwest. Dennis has studied under Allan Batty,
Stuart Mortimer in England, Ray Key, Nick Cook and Richard Raffan in the U.S. His
work has been showcased in national and international magazines. Currently he is
establishing a woodturning school in Monument, Colorado. Dennis brings to us unique
approaches to both twist work and traditional turning techniques.
Dennis began his demonstration with the following remarks:
Oh! Did you know that John Hill died and went to heaven
where he met two other guys? Together they were greeted
by St. Peter who welcomed them but also warned them. The
warning was simply Do not step on a duck! Unfortunately,
the following day one of John's new friends stepped on a duck.
Immediately the ugliest woman was hand-cuffed to him for
eternity. This really caused John to be very careful not to step
on a duck. Later that day his other friend stepped on a duck and
the same thing happened. He too was attached to a very ugly
woman again, for all eternity. Now John was really careful.
Suddenly, however, the most beautiful woman became attached
to John. He said to her, "What happened? I didn't step on a duck."
She replied, "I DID!"
Back to basics: Dennis gave a brief overview of the demonstration. It consisted
of three parts. First, a twisted stem goblet would be turned. Second, a pepper-mill would
be turned. Third, a bristle brush handle would be turned.
Goblet: The stem was formed from a one-half inch piece of cocobolo. Dennis is
sensitive to the rose woods so he uses ivy block to protect his skin. He placed the piece
in the headstock chuck. He then formed a "V" on the other end. He then bored a hole the
length of the stem with a gun boring bit with compressed air going through it. The
compressed air kept the bit and the wood cool. This permitted the bit to stay centered
and kept the chips away from the bit point. The bit had a V-groove which permitted the
chips to be blown out. Dennis used a three-sixteenth bit. He removed the cocobolo and
replaced it with a piece of holly between centers.
This was then turned into a three-
sixteenths diameter dowel rod. Dennis applied just enough pressure with the tailstock so
that it revolved. He removed the edges of the holly with a straight skew. Diameters were
constantly measured with calipers so that the dowel fit precisely into the hole previously
drilled into the goblet stem. If the live center slowed down then more pressure was
applied. As the dowel was turned it was supported by his fingers. [It is important to
have a very sharp tool.] To check dowel size the tailstock was removed and the cocobolo
stem was fitted over the holly dowel.
Dennis did not remove the holly from the chuck
because it is very difficult to achieve center when returned to the chuck. Dennis then
used thick super glue to glue the holly dowel into the cocobolo stem. He tried to cover
the entire dowel with the glue to prevent weak areas. He then turned the entire stem
round to three-eighths inch diameter. Again the straight skew was used very sharp
and always pointed in the direction of the cut. Dennis then sanded the stem and formed
one-quarter inch tenons on both ends to be attached to the goblet top and base.
The top and the base of the goblet were then turned. A three inch diameter piece
of cocobolo was used. It was placed in the chuck and no tailstock was used. Dennis
roughed out the upper outer portion of the goblet. He then formed a "V" in the goblet so
that a hole could be drilled with the gouge thus starting the interior of the goblet. It
was then hollowed to the desired depth. The deepest part was hollowed with a larger
one-half inch gouge to give better support on the tool rest. Dennis completed the interior
with a scraper. He then sanded the inside. Dennis uses wax or water on his paper to
keep the heat reduced and thus preventing cracking. The outside of the goblet was
completed. Dennis then taped the rim of the goblet with three layers of tape to protect it
when later re-chucked.Dennis then formed the bottom of the goblet with a bead to later accept the stem.
This bead matched the bead on the bottom of the goblet top. The base was then sanded.
The base of the goblet was made a little smaller in diameter than the top which gives a
more pleasing effect. The base was undercut so that it appeared above the resting surface
and not part of it. A one-quarter inch hole was drilled into the bead on the top of the
base. This was done to accept the one-quarter inch tenon on the stem. Before drilling a
"V" groove was made to establish the center. This completed the morning session except
for two more comments by Dennis:
First, did you know that the quarter has 119 ridges on the edge? And
Second, it is illegal to tie a giraffe to a light pole in Atlanta?
The afternoon session began with the gluing of the top and base of the goblet to
the stem. It is important that all centers be aligned. Dennis then described the grid
layout of the spiral twist to be formed on the stem. Four lines were drawn along the
length of the stem. The four quadrants of the chuck determined where the lines were
drawn. They were equal distance from each other. The stem was then marked in one-
half inch increments. This then formed the grid pattern. A one-eighth inch flexible tile
cutting rasp was used to file from line to line as Dennis slowly rotated the piece by hand
thus creating a spiral line along the length of the stem. A second spiral line was formed
creating a series of "X's." Then, through the already made rasp groove larger files were
used to expand the groove. This was continued until the white holly wood was exposed
in a spiral pattern along the length of the stem. A chain saw file was then used straight
across the stem to take away the sharp edges of the grooves. Dennis then angled the
chain saw file to further round off the edges. The stem was then sanded both in the
grooves and on top of the ridges. The base was then parted off and will be lacquered at a
later date. This completed the twisted stem goblet.
Pepper-mill: The pepper-mill was begun using a three inch thick piece of oak
about 12 inches long. It was placed between centers and rounded with a roughing gouge.
The headstock end was cleaned up. The actual pepper-mill mechanism was used as a
guide in laying out distances on the piece. A tenon was formed on both ends of the piece
to hold in the chuck. The piece was parted into the top and bottom of the mill. The base
of the mill was placed in the chuck and a one inch hole drilled through the entire length.
It was drilled from both directions. The bottom tenon was then turned away. The
opening in the bottom was enlarged to a depth of one-half inch so that the bottom of the
mill mechanism could be fitted in place. The bottom of the mill was removed from the
chuck and replaced by the top of the mill. A tenon was formed so that it could be jam
chucked into the bottom. The entire piece was then trued up and the tenon removed from
the top. The shape of the top was then formed making the bead and coves. A tenon was
then formed of one inch diameter on the bottom. The bottom was placed in the tailstock
and shaping was finalized with the top attached. The bottom was then sanded. A five-
sixteenth hole was drilled in the top and the top formed to match the shape of the center
part of the bottom. The top was parted off. The remaining piece was hollowed so that the
top piece could be jam chucked into it and the top completed. The mill mechanism was
then inserted and the pepper-mill completed.
Brush Handle: The final phase of the demonstration consisted of turning a soft
maple brush handle. Each club member was given two bristle brushes to take home and
make handles for each before our March meeting. These will be photographed and the
pictures sent to the donator of the brushes. This may provide him with design ideas.
These brushes are used in the flour industry. They create no static and are excellent
computer and photographic brushes.
A Forstner bit was used in the drive center to drill a five-eighths inch hole. It can
also be used as a drive center. The piece was then rounded. It was reversed and a maple
live center with a five-eighths inch nub used as a jam chuck. Details of the brush handle
were defined, sanded and parted off. The brush was set in the handle using thick super
glue. The handle was buffed to give it a satin shine. This completed the brush and the
demonstration.
More detailed aspects of this demonstration can be found in the edited tape which
will be available in April 2003.
--Bob Gunther
More about Dennis
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