Guest Demonstrator May 2006:
John Mascoll
Two for One (John
Mascoll and Avelino Samuel) made one spectacular demonstration on May 20, 2006
John, a
structural engineer and avid woodturner who specializes in hollow palm vases,
brought his unique story telling ability mixed with wood chips covering the
cameramen and floor twelve feet on either side of his demo lathe. John brought a
piece of box elder which he proudly measured to ensure he was on centers and
mounted on the Lathe. John Hill assisted with removal of the bark and the box
elder promptly gave off it’s aroma as John Mascoll quickly made the classical
form. John explained he also makes the oriental forms which the Japanese tourist
get all excited about but he doesn’t know what they are saying.
Nick
Cook watching one of John’s early demonstration told John as a demonstrator he
needed to talk more. John took Nick’s suggestion literally and although watching
a demonstrator do a hollow turning is like watching paint dry, John’s story
telling and jokes kept us all alert, as we listened for the punch lines.
John uses a one
inch brad drill bit to remove the center of the hollow form and then uses one of
the two Stewart arm brace handle with a straight hollowing tool with a machinist
bit cutting edge on center line moving from center line out as he warns us and
himself not to stroke-up. John uses his fingers on the rest to do most of the
movement. The second Stewart arm brace handle was used with a hooker tool to
remove the sides the straight hollowing tool can’t reach. John reminds us to
work removing all of the wood from the top in sections to allow the vessel to
remain supported by the wood remaining in the bottom of the vessel.
John shared a story
about an artist questioning him about how long it took him to complete a vase
and he replied “about 30 years to get the experience to allow me to make it”.
To
lessen vibration John uses a 1-1/8” straight hollowing tool with a reduced shank
he had a machinist friend make for him to fit the Stewart arm brace handle. To
gauge wall thickness he uses a variety of gauges including a home made gauge.
After hollowing half the material out of the vase he switches to a scrapper for
smoother finish cuts. John warned us several times about not over cutting while
hollowing. He informed us to listen to the “Daytona 500 whining noise that tells
him he is approaching the thickness he wants”. John secret for removing the
center nub is to place scrapper under the nub, pull up and to the left to
remove.
The popdocarpus
wood vessel was reverse chucked to finish the bottom of the vessel. See photo of
John raising the lip and installing redwood insert which he uses to stabilize
piece and attract attention to the top of the vessel. Normally John would use
polyurethane glue to attach lip on lid but for DEMO used thick CA glue and water
as accelerator. He held the gouge at a 30 degree angle to minimize catching
gouge as he opened lip. John used scrape cut on forward motion only from lip
(face grain) to end grain join in lid. John followed by sanding to length of
middle finger.
John shared his
method of identifying sable or cabbage palm by observing the end grain and look
for the darker fiber to within two inches of center which indicates more mature
palm tree. He also stated it is good to use pocket knife to cut ¼” into end
fiber indicating it is also mature enough for use. John uses popular wood with
polyurethane glue and clamps of end grain of palm tree to allow him to chuck up
the palm. He also cautioned that palm trees need to be used immediately once cut
of you’ll need to dye the palm. At this point John turned the DEMO over to
Avelino Samuel.
Avelino
Samuel’s decision to pursue a career that involved wood works came early and by
the end of high school, he knew he would seek higher education. He began at the
then College of the Virgin Islands and later transferred to North Carolina
Agricultural & Technical State University where he eared a BS in Industrial
Arts.
Later Avelino
earned a MS in Industrial Education from Eastern Michigan University and
returned home to Coral Bay, St John where he has been teaching Industrial arts.
His job as a teacher has facilitated his full engagement in his craft and active
interest in passing it on to the Carolina Mountain Woodturners, and others.
Avelino DEMO spiral
carving and showed us various dials and suggested we use a clock dial as a
template to make several. The six section dial was installed prior to the chuck
with the vessel. First he drew four lines around the circumference of a vessel
at ¼” from bottom, 1/8” from top, and 1/3 of the distance of vessel from either
end. Avelino used tool rest and dial to draw short lines across the four
circumference lines he previously drawn. He suggested use of 1/32” model
aircraft plywood to draw layout lines working from the middle out he skipped two
lines and using his layout straight edge he marked his spiral lines. To complete
the top and bottom lines he first extended the lines freehanded from the middle
line to the bottom and repeated same from middle line to the to line. Then using
scissors and construction paper he cut a template and redrew the lines and
removed any lines that didn’t belong.
Avelino
verified thickness of his vessel was the desired 5/16 to 3/8 inch thickness in
center and ¼ inch thickness on each end.
Avelino pulled out
the chair and Arbortech carver and showed us the two chisels a 60 degree “V”
groove and a Flat Chisel he would be using. He started with the “V” groove
chisel while sitting and holding the vessel being carved in his hand to control
carving technique. He proceeded to carve the spiral following his lines he
previously drew. He cautioned not to cut as deep on bottom or top ends that the
illusion of how deep they were would come from the sharp contrast. He then
proceeded to soften the edge of the lines with the flat chisel. He noted that
the right side of the edge cut easier than the left side due to the wood grain
configuration.
Avelino continued
to soften the edges using a Stanley #92 rabbit plan which he grinded one side of
the edge so it wouldn’t extend out and cut the other side of the groove. The
sharp line in bottom and top provide illusion that the cut is deeper than it
actually was. Avelino suggested we practice on a flat board using the Arbortech
carver before attempting a spiral cut.
Avelino advised us
to use a profile sander and file grooves first to have sharp lines to work from
when sanding the spiral cuts.
John
and Avelino have raised the level on hollow turning and carvings with this
inspirational fun demonstration that is sure to be a big hit with our CMW
library crowd.
Written by: Kenneth
L. Dunlap (filling in for Bob Gunther)
More about John Mascoll... |