Bead Tools

Beads are amongst the oldest human art and technology, dating back 30,000 years (Dubin, 1987). Glass beads have been dated back to at least Roman times. Perhaps the earliest glass-like beads were Egyptian faience beads, a form of clay bead with a self-forming vitreous coating. more...

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Common Types of Glass Beads

Glass beads are usually categorized by the method used to manipulate the glass. Most beads fall into three main categories: wound beads, drawn beads, and molded beads. There are composites, such as millefiori beads, where cross-sections of a drawn glass cane are applied to a wound glass core. A very minor industry in blown glass beads also existed in 19th century Venice and France.

Wound Glass Beads

Probably the earliest beads of true glass were made by the winding method. Glass at a temperature high enough to make it workable , or \"ductile\", is laid down or wound around a steel wire or mandrel coated in a clay slip called \"bead release.\" The wound bead while still hot may be further shaped by manipulating with graphite, wood, stainless steel or marble tools and paddles, this process is called marvering, originating from the French word \"Marver\" which translates to \"Marble\". It can also be pressed into a mold in its molten state. While still hot, or after re-heating, the surface of the bead may be decorated with fine rods called stringers of colored glass. These are called lampwork beads.

Drawn Glass Beads

The drawing of glass is also very ancient. Evidence of large-scale drawn-glass beadmaking has been found by archeologists in India, at sites like Arekamedu dating to the 2nd century CE. The small drawn beads made by that industry have been called Indo-Pacific beads,(see ) because they may have been the single most widely traded item in history--found from the islands of the Pacific to Great Zimbabwe in southern Africa.

There are several methods for making drawn beads, but they all involve pulling a strand out of a gather of glass in such a way as to incorporate a bubble in the center of the stand to serve as the hole in the bead. In Arekamedu this was accomplished by inserting a hollow metal tube into the ball of hot glass and pulling the glass strand out around it, to form a continuous glass tube. In the Venetian bead industry, molten glass was gathered on the end of a tool called a puntile (\"puntying up\"), a bubble was incorporated into the center of a gather of molten glass, and a second puntile was attached before stretching the gather with its internal bubble into a long cane. The pulling was a skilled process, and canes were reportedly drawn to lengths up to 200 feet long. The drawn tube was then chopped, producing individual drawn beads from its slices. The resulting beads were cooked or rolled in hot sand to round the edges without melting the holes closed; were sieved into sizes; and, usually, strung onto hanks for sale.

Read more at Wikipedia.org