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Tips, Techniques, and Questions -- Technical questions or tips |
2010-09-20, 6:55am
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Flame On!
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Join Date: Aug 01, 2010
Location: Virginia Beach, Va
Posts: 115
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Lausha Clear...Compatible?????
Howdy Glass Peeps! (urban slang for "Hello my fellow Glass People!",lol) Gotta question. I have been using Lausha clear to encase for a while. LOVE it. However, I recently started using 8-10mm rods, where as I had been using 7-8mm rods. Big issue has arisen. Almost all of my beads are cracking. But get this, 2 days later. They are fine and dandy, go thru kiln, come out fine, get cleaned and are fine. Today, I go to photo beads from Friday and Saturday that are sitting ready, and 90% are cracked in half. And they are the ones made with the larger Lausha encasing other glass, ie, CIM, Morretti, Vetrofond. Anybody have a clue??? I haven't had any issues with the smaller rods, but I really like those big thick rods to lay it on.
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2010-09-20, 7:12am
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I fart diamonds
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Join Date: Jun 14, 2005
Location: Altamonte Springs, FL
Posts: 3,893
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Cracking in half is not a compatibility issue. That's a thermal crack.
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2010-09-20, 11:25am
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Glass Hive Kiln Tech.
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Join Date: Jun 23, 2007
Location: Toledo, OR
Posts: 907
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Things encased in Lauscha clear need to be put away much hotter than other clears. I put them in when there is still a faint glow to them. It sets up faster, so I don't get kiln marks on the pieces when doing this.
There are short comings with the clear. It has issues when used with large volumes of silver glass.
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2010-09-20, 10:14pm
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Senior Member
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Join Date: Jun 11, 2005
Location: SUNNY FLORIDA~West Coast!
Posts: 9,423
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Lauscha suggests putting the bead in the annealer still glowing and annealing at 980 if you are having compatibility problems. If using with silver glass make test beads first. I use it all the time but haven't had time to test all of the silver colors...
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2010-09-21, 5:18am
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Unmedicated since '62
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Join Date: Jan 18, 2009
Location: Hunter Valley, Australia
Posts: 5,907
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i've heard some people have had problems but i havent and i've been using a wide range of lauscha rod sizes, also i tend to grab any rod so i've been mixing moretti, lauscha, cim and RC - a total recipe for disaster but it all seems to come out fine (idiots always fall on their feet )
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Deb
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2010-09-21, 9:51am
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Bead maker and bead buyer
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Join Date: Jul 24, 2008
Posts: 676
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I tend to put my beads in the kiln glowing (just because they look cool, but in the kiln I can see they're still glowing) and I haven't had any problems yet *knocks on wood*. I don't ramp the kiln up to 980 - it garages at 940. My ramp down program is fairly conservative, because "better safe than sorry".
the main thing I dislike about lauscha and some silver glass is the chartreuse I get, but I haven't had any crack.
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2010-09-21, 9:56am
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Etch Fiend Organic Junky
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Join Date: Mar 31, 2006
Location: Arvada (Denver), CO
Posts: 11,443
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I switched to Lauscha Soft Clear and have no cracking problems any more.
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2010-09-21, 2:54pm
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Frit frit and more frit!
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Join Date: Nov 09, 2005
Location: Wales, UK
Posts: 469
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I was encasing everything with Lauscha clear (except silver glass). I was recently having a tidy of all my beads and checked a few with the polarizing filters - all the Lauscha clear encased ones were stressed even after annealling. Thankfully I never get around to selling - I certainly wouldn't sell any of my beads that I have used Lauscha with now. Its such a shame because I love the glass.
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SAM x
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2010-09-21, 4:54pm
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Senior Member
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Join Date: Jun 11, 2005
Location: SUNNY FLORIDA~West Coast!
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Oh you have to ramp down slower too. I posted Carol Anne's directions somewhere here in this room a few months ago.
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2010-09-22, 12:48am
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Senior Member
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Join Date: May 24, 2008
Location: Germany
Posts: 698
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No problems here with Lauscha from 2007/2008/2009.
Also using a lot of silver glass, encased with Lauscha !!
Put my beads still glowing into the kiln at 970, hold for 30 min. then ramp down 104/h. to 824, hold again for 30 min. then turn off.
Elke
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2010-09-22, 6:12am
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Junior Member
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Join Date: Apr 15, 2007
Posts: 13
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hello!
I use Lauscha clear since almost 4 years. I have made the experience, that i can not encase any moretti or vetrofond red, orange or yellow.
Which colours did u use?
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Jasmin
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