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Like anyone else who is still
a five-year-old at heart, I want to know how to do everything.
This is the place where I will post basic tutorials about all
sorts of jewelry-related things that I have learned about and
practiced, as well as links to tutorials from others.
In the next month or so (July 2007ish) I will be adding an option
for people to take online courses with me, including detailed
electronic instructions, e-mail assistance at any time, and possibly
videos. The tuition for those will likely be in the neighborhood
of $20 to $45, depending on the class and the intricacy of the
instructional materials.
Of course, there is always the option of taking a class from
me at Sticks & Stones in Mankato. See the class
schedule for more details.
JULIE'S TUTORIALS:
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OTHER TUTORIALS:
Stefan's Florilegium - Pewter Casting Tutorial
Sandküler Studio Tutorials
Eni Oken Jewelry Tutorials
Mid-Atlantic Glass Beadmankers HowTos
Lapidary Journal Step-by-Step Projects
Delphi Art Glass Fusing Lesson Plan
DIY Network Viking Knit Lesson
Derakon (torch) Soldering Primer
Derakon Byzantine Chainmail Tutorial
Creative Chemistry: Anodizing Aluminum
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How To Make A Basic Lampwork
Bead
by Julie Bowen (text and images © 2007)
Materials:
Hot Head torch with propane or MAPP gas
Glass rods (COE 104)
3/32" mandrels (a sand-filled pot is a good holder)
Bead Release
Fiber Blanket
Process:
(1) Set-up. The Hot Head torch is a specially designed
torch that draws more oxygen into the flame than standard torches
that you would purchase at a hardware store. You can either connect
it directly to a small propane or MAPP gas container, or use a
hose to attach the head to a larger propane tank (like you would
use with your grill). Use hose clamps (like you would fine in
the plumbing section of the hardware store or in an automotive
store) to attach the torch head to an L-bracket, then use a C-clamp
to attach the L-bracket to a desk or table.
A few notes regarding the image above:
a) The hot head torch should be pointed away from you and
nothing should be in the path of the flame.
Some instructors may tell you to bend the L-clamp so that the
flame is more horizontal to the desk. This is because they use
their oxy-propane torches the same way and suggest that you should
get used to having the flame in that direction. I do not do that;
in the case that you have a workbench against a wall (as many
people do), having the flame up makes it harder to burn the house
down. Also, the more expensive oxy-propane torches have multiple
adjustment knobs, allowing you to put your flame wherever you
want.
b) It may not be clear in the image, but the L-bracket
sits on the desk like an L, mostly so that it holds the hose clamp
despite gravity's efforts to pull it elsewhere. Some instructors
advise otherwise - I don't know why and I don't think it is wise.
c) As pictured, it is best if the hose clamp goes around
the propane tank to counteract that pesky force of gravity. 2000°
flames should stay where you want them.
(2) Safety. Lampworking should be done in a well-ventilated
area. You should have a working fire extinguisher nearby. You
should use didymum glasses to protect your eyes from the strain
of looking at the bright-yellow soda flare from melting glass
rods, as well as hot bits of rogue flying glass. Have a comfortable
work area, including your chair, clothing (which should not be
excessively loose), and arm rests (if desired). The top of your
workspace should be tiled, or have a metal surface. Make sure
there is nothing flammable nearby; no matter how careful the beadmaker,
small, hot pieces of glass inevitable fly from the tip of a rod
and land on your desk, pants, shirt, eye, or floor. Most of all,
is you have any questions, consult a book or lampworking expert
(the Wet
Canvas Glass Art online community is an EXCELLENT resource,
as is the online
community at Lampwork etc., and the International
Society of Glass Beadmakers).
(3) Light the torch. A flint striker, available near the
welding and soldering supples in hardware stores, are preferable
since they don't cause a fire hazard on their own. Matches are
second best. Do NOT use a butane lighter because, if it gets too
hot, it can explode, which is not face-friendly. Turn on the gas.
You should hear it hissing. Place the striker or flame from lit
match about 2-3 inches from the top of the torch. With a flint
striker, make sure the cup of the striker is pointed AWAY from
you - flames can shoot back once the torch lights.
(4) Holding the mandrel and glass rod. You should hold
the mandrel in your off-hand (left, if you are right-handed) and
the glass rod in your strong hand. Hold the glass like a pencil.
Grip the mandrel loosely in your fist, like an ice cream cone
(on its side); you will need to be able to turn it with your thumb
and fingers. You should hold each at a 45° angle to the
edge of the table so they are perpendicular with each other. The
tip of the glass rod will be in the flame (the tip of the blue
cone is the hottest part) and the mandrel will be just behind
or to the side of the flame (you want your glass to melt just
before you put it on the mandrel, but you want anything you put
on the mandrel to firm up.)

(5) Add glass to the mandrel. You will want to touch the
melted end of the glass rod to a slightly heated mandrel (coated
with bead release) and begin turning the mandrel AWAY from you
slowly. The mandrel will take the glass with it. If you work too
hard putting the glass on the mandrel you end up with a fat, messy
bead. The glass will gradually wind off on its own. Use the flame
to separate the last string of glass between the rod and mandrel.
Put the glass rod on your tile- or metal- covered work surface
(preferably on a grooved, metal rod rest). You can switch mandrel
hands at this point if you wish. Getting a round bead with the
hole perfectly in the center is the hardest part of beadmaking
- the exact thing you need to begin with!
There are three tips:
(a) Keep the mandrel horizontal.
(b) Keep turning the mandrel in a somewhat-slow, even manner.
(c) If the glass gets uneven, with more on one side than the other,
keep turning the mandrel so it all stays molten, but turn more
slowly when the fat part is on top, letting gravity pull it down,
little by little, pass by pass. Resist trying to even it all out
at once, or using a glass rake to pull it - you can make it worse.

(6) Cooling a finished bead slowly. The COE of glass, its
coefficient of expansion, tells us how much it expands or contracts
(x10-8 inches) per degree Fahrenheit. What may not
be immediately clear is that the ouside of a bead can be cooler
than the inside, so if the outside begins to contract before the
inside, the bead can crack. Thus, you first need to cool the bead
in the flame by moving the bead higher and higher in the flame,
perhaps even passing the bead in and out of the flame (for small
beads you can theoretically flame-anneal them this way). As soon
as the bead stops glowing you should place it between two pieces
of fiber blanket to finish cooling. Some people use vermiculite,
but small particles can be inhaled or spilled, and it isn't as
efficient at regulating heat loss as a fiber blanket. If you have
a kiln, you can also place beads from the flame into the hot (950°)
kiln, or put cool beads into a cool kiln so that the beads can
be annealed (molecular structure aligned to eliminate stress in
the bead that could lead to fractures).
There are other things you will need to learn, such as
getting dimples around the mandrel so the bead holes are not sharp,
adding decorations with stringers or frit, reactions certain colors
(or metals) have with other glass, annealing, and a million other
things. This web review is just meant to get your brain thinking
about lampworking. There are several excellent books available
with a more in-depth introduction and lots of pictures, including
Cindy Jenkins "Making Glass Beads", and Corinna Tettinger's
"Passing the Flame". I also highly recommend taking a class
with a reputable local bead artist (I offer classes in Minneapolis
and Mankato, MN), or travel to take a class from a more nationally-known
instructor.
Good Luck! Please e-mail
me if you have any questions. [Back to top] |
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