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(Search pattern:tong molded beadman, since Tue, Jul 20, 2010, 22:20:29)

Did the venetians made molded glass beads like these?
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Posted by: faqrun Post Reply
01/24/2011, 10:34:22

Hello.
I found those beads among other venetians. To me they are venetians but they are molded made and they are not chevrons or something related to. The pictures shows (more or less) the union of the two halves.
Or maybe are they Bohemian?
Thank you all in advance.

IMG_8994.jpg (129.3 KB)  IMG_8995.jpg (91.9 KB)  


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Thanks Jamey.
Re: Recent Discussions -- Beadman Post Reply Edit Forum Where am I?
Posted by: faqrun Post Reply
01/24/2011, 13:41:10



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Re: Thanks Jamey. -- faqrun Post Reply Edit Forum Where am I?
Posted by: Beadman Post Reply
01/24/2011, 15:42:46

I looked for a past dialogue wherein typical Czech molding is discussed, but didn't find anything (though I am confident it's there somewhere).

This is a topic I hope to cover thoroughly when I show my photos from October, taken in the Czech Republic.

In a nut-shell:

Molded beads derive from the following processes. Prepared canes are placed into the opening of a furnace, and the leading end is heated until softened; the worker removes one from the furnace, and uses a molding device to "bite-off" enough glass to charge a mold, and the bead is perforated; the mold releases the bead, and it's placed in a hopper for further treatments.

Typical canes (there are MANY types) have a superficial external layer and/or pattern, on top of a plain base (often white or pale). When the glass is squeezed into the mold, the exterior glass remains in-place, around the bead, but some of the exterior AND interior glass is squeezed out. These glasses that extend beyond the seams of the molding are called "flash." The flash is removed (by being broken off, ground down, or tumbled in abrasives—three typical approaches). OFTEN, once the flash is removed, the seam is a complete line of the base color. THIS makes it appear that the bead is made from two separate parts that have been fused together. (See specimens shown in previous posts linked in this thread.) The molding process itself causes this appearance—though the bead itself in from a single piece of cane.

The apparatus used for bead-molding can be hand-held tong molds, or actual mechanical presses. The molds make one bead at a time, or several (two, three, four--whatever), depending on the number of bead-shaped depressions within the mold. Then, when presses are used, the machine can "bite-off" a series of beads—until the length of softened glass is used-up, and the worker must pick up and insert a new heated cane.

By the way, I have asserted many times the differences between "molded" beads and "pressed" beads. Molded beads so not exist as-such until they come out of the molds. (Until that time, the glass is still only a piece of cane.) Whereas a pressed bead can be any previously made hot bead (whether wound, drawn, blown, or whatever), that is then inserted into a mold to be reshaped. These were already beads, before the molding took place. This is a useful distinction. HOWEVER, it is a fact that in the Czech Republic, molded beads are routinely called "pressed beads"—and this is because the apparatus they typically use to make such beads is called a "bead press," and has aspects in-common with machines such as "printing presses" and the like.

This is an unfortunate and potentially-confusing technical naming issue.

I hope you can follow all this.

Jamey



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