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Safety -- Make sure you are safe! |
2012-11-05, 2:41pm
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@miniuniworld
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Join Date: Feb 11, 2012
Location: Bergen County, NJ
Posts: 176
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eye protection for melting recycled bottle glass
Hi
Can anyone please tell me if Didy's are good enough for melting bottle glass? or do i need glasses used for boro?
Thanks!
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kk
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2012-11-05, 4:02pm
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Senior Moment
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Join Date: Apr 15, 2008
Location: Liberty NC
Posts: 688
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Safety glasses for soft glass will work just fine
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2012-11-05, 4:05pm
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Senior Member
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Join Date: Jun 14, 2005
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Didy's are fine. Treat bottle glass as if it was AROUND a COE 90-- that's a memory call and I'll be the first to say I'm getting old. Don't mix bottles. Even 2 that look alike may have come from different batches of glass and can be incompatible. Surface decorate with stringers you pulled from the bottle but do not mix bottles.
Sue
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Sue Walsh
The past is history,
The future is a mystery
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2012-11-05, 7:01pm
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@miniuniworld
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Join Date: Feb 11, 2012
Location: Bergen County, NJ
Posts: 176
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great! Thanks!
Can frit be used on bottle glass?
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kk
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2012-11-05, 7:19pm
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Quote:
Originally Posted by @miniuniworld
great! Thanks!
Can frit be used on bottle glass?
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No. I wouldn't take the chance. The COE's will vary too much.
Sue
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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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2012-11-05, 10:35pm
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@miniuniworld
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Join Date: Feb 11, 2012
Location: Bergen County, NJ
Posts: 176
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okay thanks!!
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kk
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2012-11-06, 4:37am
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Now part of the Dark Side
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Join Date: Jul 02, 2010
Location: North Central PA
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If I recall correctly my research showed that bottle glass was between 80-90 COE. Also bottle glass has a much narrower working range than 104 or even boro, that's the way it's designed. It doesn't devit like boro, it just stops moving.
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Roy
Hot glass does not crack.
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2012-11-06, 5:10pm
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@miniuniworld
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Join Date: Feb 11, 2012
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Quote:
Originally Posted by Dragonharper
If I recall correctly my research showed that bottle glass was between 80-90 COE. Also bottle glass has a much narrower working range than 104 or even boro, that's the way it's designed. It doesn't devit like boro, it just stops moving.
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Hi... What's devit? and what does it mean when it just stops moving?
thanks!
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kk
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2012-11-06, 5:39pm
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Devit = Devitrification. If you force the glass to move before it's ready it will devitrify. It gets a frosty look to it. I'm not sure what it does structurally to the glass but it doesn't look nice. With boro you can usually just reheat and fire polish it out.
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Roy
Hot glass does not crack.
Unless it is glowing and drippy, hot glass looks like cold glass.
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2012-11-06, 6:05pm
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Senior Member
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In strict terms 'devitrification' means that a crystal structure develops in the glass. It gives a frosted look to the surface and can degrade the structural integrity of a piece. The 'Devit' in boro is very often simply a wrinkling of the surface that has cooled more quickly than the inside, not true devitification, so it can be fire polished out. It looks similar but is actually quite different.
Robert
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Robert Simmons
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2012-11-06, 6:05pm
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@miniuniworld
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Join Date: Feb 11, 2012
Location: Bergen County, NJ
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got it! Thanks! =) learning something new everyday!
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kk
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2012-11-06, 6:07pm
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Nikki Haverstock
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Join Date: Oct 10, 2010
Location: NW Colorado
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Quote:
Originally Posted by RSimmons
In strict terms 'devitrification' means that a crystal structure develops in the glass. It gives a frosted look to the surface and can degrade the structural integrity of a piece. The 'Devit' in boro is very often simply a wrinkling of the surface that has cooled more quickly than the inside, not true devitification, so it can be fire polished out. It looks similar but is actually quite different.
Robert
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Thanks. I was gonna ask if the terminology differed between soft and boro.
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Nikki Haverstock
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2012-11-07, 10:20am
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@miniuniworld
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Join Date: Feb 11, 2012
Location: Bergen County, NJ
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while we are on the topic of recycled glass....
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kk
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2012-11-07, 10:28am
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Join Date: Jul 02, 2010
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Thanks Robert, I wasn't sure if it crystallized or not.
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Roy
Hot glass does not crack.
Unless it is glowing and drippy, hot glass looks like cold glass.
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2012-11-25, 1:38pm
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shirts
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Join Date: Aug 29, 2011
Location: Peterborough, Ontario, Canada
Posts: 128
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Quote:
Originally Posted by Dragonharper
If I recall correctly my research showed that bottle glass was between 80-90 COE. Also bottle glass has a much narrower working range than 104 or even boro, that's the way it's designed. It doesn't devit like boro, it just stops moving.
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Well, I have managed to devitrify bottle glass... Must be really talented!
Annie.
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