Tennessee Valley Woodworkers
Vol. 19/ Issue 9 September 2004 Editor: Tom Gillard Jr.
The next meeting of the TN Valley Woodworkers
Will be held, September 21st at 7:00 p.m. in the
Duck River Electric Building, Dechard, TN
All interested woodworkers are invited!
The following people have agreed to serve as contacts for their particular skills. If you have questions, suggestions for activities, or other comments relating to these skills, please call these folks. Their interest is to help the club better serve their area of expertise. Your participation with them will help them achieve that goal.
Tom Church 967-4460 Turning Harry May 962-0215 Carving
Bob Reese 728-7974 Sharpening Ross Roepke 455-9140 Jointery
Maurice Ryan 962-1555 Health and Safety
List of Club Officers
Sept. 19-24: Coffee
(click above to see features)
The club booth will not be open on Tuesday, since this is the regular meeting night for our club.
Please bring items to display in our booth. Come and join the club and have a relaxed time at the Fair.
The club contact for this event is Doyle
Bob Lowrance displayed a carving of an eagle and flag he had made at John Campbell School. He also had a relief carving of Pinocchio he had made for the Manchester Art display
Bill Davis brought an oak display case, a box elder bowl and three boxes. One was made from 4 different woods.
Jim Roy brought a nice spalted hackberry bowl and a cherry footstool with turned legs.
Ross Roepke had four more boxes he had made for a charity auction. He also had a table made from maple, mahogany and walnut. The finish was Deft.
Mary Ellen Lindsay brought the finished caricature carving that she started during the last carving seminar.
Harry May brought a carving of three dolphins. The wood was Bradford pear that Ken Gould had given him.
Jim Van Cleave had four of six jewelry boxes that he had made for cousins. They were made from cherry and walnut. He encouraged people to bring things to show and tell.
David Whyte had a grinding station that he had made. The inspiration came from Bob Reese’s grinding seminar.
Maurice Ryan brought and discussed a replacement “hook and loop” for a random orbit sander that he had found at Lowe’s. They can also be found at supergrit.com
Ken Gould had a 1920 banjo that
came from Sears that he had reworked. He had also made a
fretless banjo of the 1830-1870 period. The wood was cherry, maple,
ebony and blackwood. The hide was from a deer that his father had
killed. Geoff Roehm played it for
The supporting role of backings and bonds
The backing's stiffness and flatness influence the quality and speed of the sandpaper's cut. For the most part, manufacturers choose adhesives and backings to augment the characteristics of a particular abrasive grit. You will have a hard time finding an aggressive abrasive mineral, for example, on a backing suited to a smooth cut.
stiffer the paper, the less the abrasive minerals will deflect while cutting.
They will cut deeper and, consequently, faster. Soft backings and bonds
will allow the abrasives to deflect more, giving light scratches and a
smooth finish. You must even consider what's behind the backing. Wrapping
the sandpaper around a block of wood will allow a faster cut than sanding
with the paper against the palm of your hand. For instance, an easy way
to speed up your orbital sander is by exchanging the soft pad for a stiff
one. The other consideration is the flatness of the backing, which has
nothing to do with its stiffness. Flat backings position the minerals on
a more even level so they cut at a more consistent depth, resulting in
fewer stray scratches and a smoother surface.
Cloth is the stiffest but least-flat backing. It will produce the coarsest and fastest cut. Cloth comes in two grades, a heavy X and a light J. Paper is not as stiff as cloth but it's flatter. It comes in grades A, C,D, E and F (lightest to heaviest). A-weight paper that has been waterproofed is approximately equivalent to a B-weight paper, if one existed. Polyester films, including Mylar, look and feel like plastic. They are extremely flat and pretty stiff. They will give the most consistently even cut and at a faster rate than paper.
The backings for hand sheets and belts are designed to flex around curves
without breaking. This is not true for sanding discs for random-orbit sanders.
They are designed to remain perfectly flat, and if used like a hand sheet,
the adhesive will crack off in large sections. This is called knife-edging
because the mineral and adhesive separated from the backing, form knife-like
edges that dig into and mark the work.
Adhesive bonds on modern sandpaper are almost exclusively urea- or phenolic-formaldehyde resins. Both are heat-resistant, waterproof and stiff. Hide glue is sometimes used in conjunction with a resin on paper sheets. It is not waterproof or heat-resistant, but hide glue is cheap and very flexible.
When this article was written, Strother Purdy was an assistant editor of Fine Woodworking.
Photos: Strother Purdy; drawing: Tim Langenderfer
From Fine Woodworking #125, pp. 62-67
In the U.S., Douglas fir (Pseudotsuga menziesii) naturally ranges from the Mexican border north to Alaska, and from the Pacific coast east to the Rocky Mountains. Often found in pure stands, Douglas fir can attain an average mature height of about 300' and diameters from 10' to 17'.
On older trees, the rough bark may be 12" thick. Younger trees have a smooth bark with frequent blisters filled with a pungent resin.
Tiny winged seeds, released from cones as large as a man's fist, quickly germinate in sufficient sunlight. Because of this, Douglas fir quickly takes over and reforests burned or clearcut areas.
Douglas fir's pinkish-yellow to orange-red heartwood provides a distinct contrast in the growth rings. On flatsawed boards and rotary cut veneer, this translates to an abrupt color change. The thin band of sapwood is often nearly pure white.
In comparison to its weight, Douglas fir ranks as the strongest of all American woods. It is also stiff, stable, and relatively decay resistant.
Douglas fir's coarse texture can't easily be worked with hand tools. And to avoid tearing grain, even power tool blades must be sharp. Yet, the wood grips nails and screws securely, and readily accepts all types of adhesives.
Because Douglas fir contains fewer resins than many other softwoods, count on success with paint and clear finishes. Staining, however, becomes a problem due to the light-to-dark variation between growth rings that causes uneven coloration.
Uses in woodworking
Vast quantities of Douglas fir provide dimension lumber for the construction industry and veneers for plywood. The wood's appearance and easy-working properties have earned it a spot in the manufacturing of windows, doors, and moldings.
Flatsawed, Douglas fir makes attractive, serviceable cabinets and paintable furniture. Sawn as vertical grain, Douglas fir performs well as flooring and looks stunning as cabinetry.
Cost and availability
Found across most of the nation as common construction lumber, Douglas fir falls in the inexpensive price range of about $1 per lineal foot. However, sawed for vertical grain and graded for "superior finish," the cost rises by at least three times. Douglas fir plywood in all grades is readily available.
Illustration: Steve Schindler
Photographs: Western Wood Products Assn.
Donations to the club have been made by these companies.