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<p>[QUOTE=&quot;Cherryhill, post: 2841198, member: 70&quot;]&quot;Oiling the moulds&quot; is fiction. The temperature of the glass, in excess of 2,000º f, would ignite the&nbsp;&nbsp; oil, leaving a greasy residue on the glass. The &quot;Greasy&quot; feel of glass is from an exudate, something that comes out of the glass. It comes from a compound in the glass&nbsp; to make it easier to work. It is normally used, but when used in excess causes the glass to &#039;weep&#039;. Too much and it comes out sooner, just enough and it never comes. out. </p><p>Modern, glass making machines automatically ignite a gas jet inside the mold just before the hot glass is added to&nbsp; coat the mould with soot, carbon black.[/QUOTE]</p><p><br /></p>

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