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Tips, Techniques, and Questions -- Technical questions or tips

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  #1  
Old 2014-06-23, 1:56pm
Lyn Foley Lyn Foley is offline
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Default Curved Hollow Bead

Does anyone know how these curved green hollow beads are made? I heard that the Italians have curved mandrels that are then eaten away by chemicals after the beads are completed. Is this true? How else could they be made?



Thanks

Lyn
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  #2  
Old 2014-06-23, 2:09pm
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lenora lenora is offline
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I'm no expert on hollow beads, but I would guess they are large hollow beads that were heated up enough to droop a bit.
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  #3  
Old 2014-06-23, 2:18pm
Floorkasp Floorkasp is offline
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Perhaps they are made from tube glass?
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  #4  
Old 2014-06-23, 4:53pm
Talonst Talonst is offline
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Can't say how those beads were made, but one way they can be made is with a brass mandrel. This Akihiro Ohkama video shows how http://www.artcoinc.com/jls_dvd.php

There were also a couple articles in Glass Line starting with August/September, 2012 - Vol. 26, No. 2, Laurie Nessel. 2 part article, if I remember correctly
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Old 2014-06-23, 5:30pm
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Charmaine Charmaine is offline
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If you look at how the holes are oriented, the mandrel must be curved. That's got to be a challenge.
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  #6  
Old 2014-06-24, 7:05am
Lyn Foley Lyn Foley is offline
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Don't think I am ready to spring for the cost of the video. The brass mandrel is curved, then how to get the bead off? Any ideas?

Thank you Lyn
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  #7  
Old 2014-06-24, 7:37am
2xMI 2xMI is offline
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I just googled "curved mandrel" and what caught my eye was something by Inspiration tool works regarding a continuous curve, which makes sense. Also, to use bead release that releases easily. He was talking about solid beads, though, so I think removing hollow beads might be easier. Haven't tried it, though!

Mimi
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  #8  
Old 2014-06-25, 6:25am
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You could achieve a similar effect with a straight mandrel, a hollow mandrel and a spoon.

If you really want that exact shape you could build up the top sides with a little dab of glass and work it up so that it looks like a more C shape curl on top. (So it's the same shape with a re-orientated hole)
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  #9  
Old 2014-06-25, 6:35am
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Leslie Thiel has a different method, and there is a dvd available.
http://www.abrimagery.com/product_in...-thiel-p-38846
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  #10  
Old 2014-06-30, 5:14am
Jeri Jeri is offline
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I'm pretty sure the green hollow tube is blown, without a mandrel. Leslie's technique, which works really well, is for a solid bead. Jeri
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