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Question for Horoscope Fish
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<blockquote data-quote="Horoscope Fish" data-source="post: 575147" data-attributes="member: 13090"><p>Yes, I'm familiar and now everything makes sense. </p><p></p><p>Glaskolben tubes are pre-blown glass cylinders with a blow pipe at one end and a bulb on the other. What you'll be doing is heating the bulb-end of your tube over a bench-mounted propane torch. Once the bulb is hot enough (orange stage) you will be able to manipulate it with hand tools (pinching, twisting, etc.) or by blowing into the attached blow-pipe to make a hollow sphere. You will probably add what's called "frit" into the bulb before you start heating it which is powdered color; when heated it melts into the clear glass to give it permanent color. </p><p></p><p>Once you're done blowing your ornament-to-be will go into a small oven called an "annealer". The annealer cools the glass down <em>slooooooowly</em>. Hot glass is highly stressed and if it cools too rapidly it will, quite literally, explode. This is bad. I can't even tell you how bad this is. But don't worry because that's not going to happen.</p><p></p><p>Can't wait to see your ornaments!</p><p></p><p><strong>Edit:</strong> Found you a picture... Glaskolben tubes come in different shapes and sizes but this is one of the more common ones:</p><p><span style="color: #FFFFFF">....</span></p><p>[ATTACH]224173[/ATTACH]</p></blockquote><p></p>
[QUOTE="Horoscope Fish, post: 575147, member: 13090"] Yes, I'm familiar and now everything makes sense. Glaskolben tubes are pre-blown glass cylinders with a blow pipe at one end and a bulb on the other. What you'll be doing is heating the bulb-end of your tube over a bench-mounted propane torch. Once the bulb is hot enough (orange stage) you will be able to manipulate it with hand tools (pinching, twisting, etc.) or by blowing into the attached blow-pipe to make a hollow sphere. You will probably add what's called "frit" into the bulb before you start heating it which is powdered color; when heated it melts into the clear glass to give it permanent color. Once you're done blowing your ornament-to-be will go into a small oven called an "annealer". The annealer cools the glass down [I]slooooooowly[/I]. Hot glass is highly stressed and if it cools too rapidly it will, quite literally, explode. This is bad. I can't even tell you how bad this is. But don't worry because that's not going to happen. Can't wait to see your ornaments! [B]Edit:[/B] Found you a picture... Glaskolben tubes come in different shapes and sizes but this is one of the more common ones: [COLOR="#FFFFFF"]....[/COLOR] [ATTACH=CONFIG]224173._xfImport[/ATTACH] [/QUOTE]
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