BLOWN GLASS ORNAMENTS
for Christmas or Year-round Decoration
Glaskolben is the name for a pre-blown clear glass cylinder with a
blow pipe end, used for blowing glass balls or 3 dimensional shapes.
It is the same product used throughout Europe for making Christmas
The prefabricated cylinder saves the time consuming and tedious
method of “pulling points” from a glass tube. Glaskolben is available
in two forms: Sealed End Cylinder and Dual Spike Cylinder. Each
form is available with 1.0 or 1.5 mm wall. The wall thickness governs
the maximum blown form size.
Glaskolben ornaments may be blown freehand into a ball or blown into a mold
for 3 dimensional shapes. Stock molds are available, however the glass artist
can fabricate custom shapes. Typical stock molds include: a Pine Cone, Fish,
Strawberry and Santa Claus Head. An available mold Clamp fits these molds.
All that is needed to make attractive glass shapes with Glaskolben:
A torch head for Mapp Gas use (the Hothead, Cat. No. 15613).
A gas/oxygen torch such as the bushy flame capable Minor Bench
Burner, Cat. No. 1602, could also be used. There are several other
types of burners available.
Optional - Mold Clamp and Molds, Annealing Oven Cat. No. 15285.
Glaskolben. Frit and Powders, Bullseye or Uroboros. These are
available in a good assortment of colors. Ornament Caps and Loop Sets.
These are available in 10 or 17mm size and gold or silver color.
Glaskolben has a Coefficient of Expansion (C.O.E.) of “89” which makes it compatible with Uroboros
and Bullseye “90” glass frit and powders. Any other glass with a different C.O.E. will cause the finished
ball or shape to fracture from stress.
GLASS BLOWING AN ORNAMENT
Blowing an ornament with Glaskolben is easy. However, it takes
practice to get the feel of the glass as it softens in the flame.
Light the torch and adjust the flame back from a sharp point. A broader flame
is better. Select a Sealed End Cylinder and introduce it into the back