[Jewelry making - Article 00509] - Re: [Orchid] Glass blowing

[Eileen Procter]

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    HI Michael, there are two types of glass, hard (like borosilicates
    used in laboratory glassware) and soft (used for beads).  There are
    websites for bullseye and moretti glass companies on the web and
    smaller companies that supply glass in rod, tube or sheet form. 
    These are soft glasses and the two most known suppliers (there are
    others).  I'm not sure who supplies the hard glasses.  You should
    probably be aware that not all glasses are compatible and you need to
    check the coefficient of expansion (COE) for compatibility.  Hope
    this helps Eileen

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