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| Tips, Techniques, and Questions -- Technical questions or tips |
2022-03-05, 11:57am
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Junior Member
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Join Date: Jun 12, 2018
Location: Surrey
Posts: 2
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Can you make marbles using Bullseye & Boro together?
My partner has just started using Boro & loves it but I’ve seen some Bullseye for sale - can it be added to Boro or are they totally incompatible??
Please excuse my naive question as I’m a novice at this.
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2022-03-05, 1:46pm
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Senior Member
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Join Date: Feb 02, 2010
Posts: 3,467
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Hi! You absolutely cannot use boro with any other glass besides boro. Same goes for Bullseye. The 104 glasses are compatible sometimes, but not always. Explore the tips and techniques page, as there's a ton of info in there on mixing COEs (or not).
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ESC
Soft glass on a Minor/concentrator since 1996
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2022-03-06, 7:07pm
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Senior Member
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Join Date: Jun 14, 2005
Location: The Rocky Coast State!
Posts: 6,622
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No, absolutely now. The COE's (Cohesions of Expansion) are too far apart. Think of it like jello and ice. They're both solid forms but they don't stick together... and with glass incompatibilities, you could be talking about some glass explosions you don't want to be close to.
Sue
DRAT-I always do that! It
s COEFFICIENT, not cohesions. Why can I never remember that word?!?!?!
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Sue Walsh
The past is history,
The future is a mystery
and the present is a gift.
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2022-03-07, 2:21pm
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Senior Member
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Join Date: Aug 31, 2006
Location: Knoxville, TN
Posts: 2,271
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The coefficiency of expansion for borosilicate glass is 33 COE, and for Bullseye, 90 COE. That is very far apart in terms of glass compatibility, and as has been stated, likely to shatter dramatically even if you can get them to combine.
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Kathy
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2022-03-08, 3:06pm
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Senior Member
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Join Date: Dec 22, 2012
Posts: 445
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Hey Smokaijo, glad to see you found this great glass site! There's so much info here it's glorious.
As my friend Phill says, "Welcome to the Addiction!"
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2022-03-08, 4:29pm
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Phill
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Join Date: Mar 21, 2009
Location: Winnebago, MN
Posts: 2,489
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Aye and hide the bank numbers to the grandkids college accounts.
The most addictive glass can get real spendy in a hurry.
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The Zombie Apocalypse is Upon Us.
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2022-03-08, 5:28pm
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Senior Member
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Join Date: Jun 19, 2021
Location: los angeles
Posts: 154
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There are epoxies that work with glass. You could always make some soft parts and some boro parts and then 'combine' the different glasses by adhering them to each other after cool down. Not quite the same but it's an idea...
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2022-04-29, 1:09am
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Junior Member
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Join Date: Aug 06, 2021
Posts: 15
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You cannot use Bullseye & Boro together, since there COE is too far apart.
I made marbles and mixed soft glass into Boro mistakenly before, and here is the result:
1. The Boro mixture became soft (because soft glass was added).
2. It is full of cracks inside, like cracked ice. But is still a marble shape.
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