Glassblowing 101: the bulb.
Here is a little effort in helping those who are struggeling with producing straight and even glass bulbs. They (bulbs) are common in scientific glass instruments and should be mastered by the (starting) glassblower. It is also a great way in building your skills. I made comments in the video, but you can leave a question in the section below too.

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Tube in tube

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Why modern chemistry still needs glassblowers

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Glass Bubbles | Glass Blowing Techniques | Blowing The Perfect Glass Bubble

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Blown Christmas Ornament

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Gayle Price Scientific Glassblower University of Leicester

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The glassblower: Not your average technician #2

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Bender-Back Stack - Glassblowing - Colorado Color Company - line-Work - Wig-Wag - Borosilicate Glass

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Most Ridiculous Worker Mistakes Caught on Camera

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Glass Blowing a Large Bubble by Hand

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scientific glassblowing forming of a borosilicate glass flange

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God Says:"MY CHILD, I NEED TO SEE YOU URGENTLY!"/God Message Now/God Message

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Homemade Incandescent Lamp (Glass Blowing)

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Glass attachment technique

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Making Glass Tubes with a Bubble on the End

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Revealing The SPECIAL TECHNIQUE Of A Pakistani Man To EXTRACT GOLD From Used Motherboard Waste

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Scientific glass blowing

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When Wild Animals Get Way Too Close 😱

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Flaring Lampworking - Glass Blowing Techniques

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Scientific Glassblowing - Coils

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