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An
Overview of the Techniques and Design Aspects of Glass Paperweights,
and Other Glass in Glass Objects
Senior
Smith Apprentice Thlayli
The
art of making glass paperweights has been handed down by glass
smiths for hundreds of turns. Until recently, however, the use
of the glass in glass technique has been relatively forgotten
due to unpopularity. Now, however, through a few artisans who
have become experts on the process, and have passed the techniques
and passion for this type of artistry onto me, I hope to help
the production of glass in glass items to make a come back. In
this scroll I will explain the process of making paperweights,
the most popular form of glass in glass artistry.
To
make glass paperweights, you must start out with the basic ingredients.
Mainly, those of any glass item: inorganic salts such as soda
and potash (potassium nitrate), and lots of sea sand. Sometimes,
lead can also be added to make a heavier, more brilliant glass.
The above ingredients are than placed in a "refractory pot",
a fireproof pot of clay, that can withstand the excessive temperatures
(more than 2600 degrees fahrenheit) needed to make a viable batch
of glass. As it is "boiling", the mixture is stirred
to eliminate imperfections and make the glass more homogenous.
After it is done, it is in a red hot liquid form, which can be
shaped and manipulated as it cools, into the desired designs,
using an array of special tools. These tools include: pontil
rods (rods of iron used to hold molten glass), blocks (curved
wooden paddles used to shape the domes of paperweights), torch
(flame used to make lampwork designs), marvers (smooth, flat
iron surfaces on which molten glass at the end of a pontil rod
is rolle, molds (precast iron forms of different designs and
shapes in which molten glass is pressed to create cane designs),
shears (scissors-like instrument used to cut malleable glass),
and templates (small cast iron disc's on which the motif is carefully
arranged before being picked up).
The
next step is to design the paperweight motif, which is either
inserted in blown glass, or arranged in a template and picked
up by a blob of molten glass. The motif can be several things.
It can be a design of millefiori canes (cross sections of molded
glass rods of various sizeds and colors used in paperweights),
lampwork (manipulation of glass with a small flame to create
flowers and animals, etc...), Lace (white or colored glass threads
spiraled around a clear rod, uniformly chaotic)), or any combination
of the three, as well as latticinio (a lacy backdrop of white
and clear glass, in a basketweave pattern) and torsade (a twisted
opaque glass thread loosely wound around a lace core). With the
above techniques, a unique and beautiful paperweight can be created.
How this is done is explained in the next paragraph.
To
actually make the paperweight, it is possible to go two different
ways. The first is the pick up method. This is usually the method
used when working with Millefiori canes. First, the canes are
arranged according to the artists conception of motif in a template
and heated to just below melting point to avoid cracking when
hot glass is added. A metal collare is palce around the arrangement
to hold it in place. A small ball of molten glass, called a gather,
is than collected on the end of a pontil, and rolled and worked
into shape on the marver. The molten glass is than lowered into
the collar to pick up the preheated design, forming the base
of the paperweight. (Note that the template is held in the collar
designdown). After the template has been picked up, more molten
glass is added, shaped by a block as it builds up, creating the
dome of the weight, after the first gather is reheated in a glory
hole (small hole in a furnace to allow a pontil rod and template
through), and more gathers of molten glass arehan added to form
the dome of the weight, until the desired size and magnification
is aquired, After the weight has been made to specifiactions,
it is allowed to cool. As it is cooling, it is rolled back and
forth on the pontil across the arms of a glassworking chair so
that the still soft, cooling glass retains the desired shap without
sagging. A wet block is used to help keep the glass in the desired
shape. Tongs are also used at this point to to create a slender
neck at the base of the weight, and when the glass has cooled
significantly, the pontil rod is tapped gently, and the weight
falls off into a bed of sand. To complete the weight, it is cooled
the rest of the way in an annealing oven (oven that gradually
cools an object to allow even cooling and guard against cracking).
This is the trickiest part of the process, as the design and
weight can cool at different rates, causing a piece to shatter
and crack. The only thing left to do after the weight is cooled
is to grind and polish the weight, using a grinding wheel. It
is here that the pontil scar (mark left by the pontil after the
weight is broken off) is removed, and facets (flat or concave
cuttings of the domed surface of a weight) can be added, to the
top, sides, or both.
Now
that the process of making the weight has been explained, I will
attempt to explain the creation of the design elements, starting
with the millefiori. Millefiori are canes of glass that have
been pressed in iron molds of differing shapes, sizes and designs.
To make them, a gather of molten glass is rolled on a marver
until it forms a rod. Than, if desired, color is added by rolling
the glass in glass powders. It is than pressed into an iron mold
and allowed to cool. The same piece is again worked on the marver
after another gather of molten glass is added, and the process
is repeated, using different colors and different shaped molds,
until several layers have
been built up, creating a design. At this stage, the cane is
too big, about 3 centimeters in diameter, whereas to be used,
it needs to be pencil thin. To do this, the cane is reheated,
and another pontil rod is added to the other end. When this is
done, the cane is stretched between two people, causing the cane
to elongate and become thinner, although the design stays intact,
but is miniaturized. Only a small portion of the cane is stretched
evenly enough to be used. This section is sliced into tiny pieces
that become the canes within a paperweight. More complex canes
can be made by putting several canes together in a bundle, fusing
them together, and than stretching them several times, until
the separate canes meld together, creating one, usually with
a flower like design, with a central rod, and five to six outer
ones as the petals. Millefiori can than be arranged on the template
in tightly packed designs, chains, or random (messy) patterns.
Millefiori are the most popular type of paperweight.
Another
popular type of paperweight is that made with lampwork designs.
Lampwork is the manipulation of glass by using a very hot, small
flame to bend and shape the glass into objects; mainly, flowers
and animals. To do this, rods of colored glass are heated, than
pressed and shaped into the desired forms, the glass easily malleable,
because it is held above the flame while this is being done.
The intricacies of lampwork are breathtaking in the detail to
be found. The more popular motifs are those depicting flowers
and fruit, and underwater scenes, and the lampwork, if done well,
can look almost lifelike. It should be noted that lampwork motifs
are usually encased in hollow weights (blown weight with a central
hollow air bubble surrounded by glass), as are weights using
the torsade and lace designs, instead of the capture method used
for millefiori described previously. It should also be noted
that any combination of the above techniques are allowed. It
is up to the artist to decide how complex the weight's design
will be.
To finish, not every paperweight is of a domed shape, with
a flat bottom. Some are footed, having a pedastal, and some are
in the shapes of baskets, or hearts, etc...basically, whatever
shape the artist wants, even vases, lamps, perfume bottles and
pendants have been made using the paperweight techniques. As
well, the weights and other items are not always clear. A technique
called overlay (a method in which a paperweight has been coated
in one, two or three layers of colored glass), than faceted to
provide windows through the color to view the inner design. Outer
designs, such as crisscrosses, or swirls can also be done with
engraving tools, either cutting through all layers of the colored
glass, or just the top ones, so that the different colors show
through. The entire weight is than encased in clear glass to
protect the overlay. In all, paperweights and other glass in
glass objects are time consuming, and take practice and knowledge
to create, but the end results are worth the effort involved.
The
above text was made possible by the reading of the book "All
about Paperweight" by Lawrence H. Selman, and through perusal
of an article entitled "Glass Novelties in the Paperweight
Tradition" by Richard V. Simpson in Antiques & Collectors
magazine. |