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| Tips, Techniques, and Questions -- Technical questions or tips |
2008-12-09, 1:15pm
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Catnip Pusher
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Join Date: May 22, 2006
Location: Hayward, CA
Posts: 1,740
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Issues With CIM Plum Over Blush?
I did a bead with CIM Plum over CIM Blush, and I seem to be getting what look like incompatibility cracks! I thought I remembered a site where the exact coe for CIM glass was listed, but I can't find it now.
Anyone else have any issues? Or am I going crazy? 
Aimee
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2008-12-09, 1:57pm
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da General
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Join Date: Oct 05, 2006
Location: San Francisco
Posts: 13,002
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Sorry to hear about that, Aimee! I believe Kathy from CIM mentioned that the translucent ones (Cirrus being one) are the only ones that need to be annealed at 1050. Don't think Plum or Blush falls into that category.
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Hayley
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2008-12-09, 6:29pm
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Senior Member
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Join Date: Dec 30, 2006
Location: Michigan
Posts: 247
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I have had troubles with plum.
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2008-12-09, 7:41pm
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Catnip Pusher
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Join Date: May 22, 2006
Location: Hayward, CA
Posts: 1,740
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Thanks Hayley and Amy!
Actually, Plum is slightly translucent (or maybe I should say sometimes translucent!), so it may indeed be the problem.
I'd swear I remember seeing a website with details like that of all the CIM colors, but it's driving me crazy that I can't find it now. Must have been someone's personal project that's been dropped off a server. Nuts.
Aimee
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2008-12-09, 10:03pm
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Um......
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Join Date: Nov 30, 2005
Location: Castlemaine.....Australia
Posts: 195
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I have an annealing chart which may or may not be helpful! I cant seem to attach it here, PM or email me if you would like it.
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Carli
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2008-12-10, 2:54pm
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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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Quote:
Originally Posted by PolychromeBeads
Thanks Hayley and Amy!
Actually, Plum is slightly translucent (or maybe I should say sometimes translucent!), so it may indeed be the problem.
I'd swear I remember seeing a website with details like that of all the CIM colors, but it's driving me crazy that I can't find it now. Must have been someone's personal project that's been dropped off a server. Nuts.
Aimee
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I have this stuff up on my website..Paula
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2008-12-10, 7:56pm
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Catnip Pusher
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Join Date: May 22, 2006
Location: Hayward, CA
Posts: 1,740
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FYI - the bead that I made that cracked I put back in the kiln yesterday, then reheated in the torch until the cracks disappeared. I put it in very hot, but this morning when I opened the kiln it was cracked again! I think this confirms incompatibility.
I also realised that I made some other beads last week that were Plum over Vetrofond clear. I just pulled them out and they are all fine. Which is very strange, because it seems to indicate that the Blush was the culprit - but I know I have encased Blush before!
Curiousier and curiouser... 
Aimee
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2008-12-11, 11:06am
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da General
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Join Date: Oct 05, 2006
Location: San Francisco
Posts: 13,002
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Aimee - I double checked Plum and you are absolutely correct that it's translucent. Don't know why Plum over VF Clear is ok tho.
Here is the thread with Kathy from CIM posting the annealing temp:
http://www.lampworketc.com/forums/sh...26#post1140126
Specifically:
http://www.lampworketc.com/forums/sh...6&postcount=15
This is from an email I got from her dated Feb of this year:
"In the meantime, I wanted to assure you that all of our testers successfully annealed Messy Color with their regular schedules for Effetre EXCEPT with Cirrus, Halong Bay, and Peacock Green. These are the only three that I would suggest turning up your annealer for as they share a base formula that was especially designed to maintain translucency."
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Hayley
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2008-12-11, 11:59am
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Entropy increasing....
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Join Date: Nov 12, 2005
Location: In a box of paints
Posts: 25,098
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I have had issues with the Plum. It's a nice color, but it's cracked everytime.
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2008-12-11, 4:45pm
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Mad about Glass
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Join Date: Nov 29, 2005
Location: Sydney, Australia
Posts: 1,052
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Every time I try to encase CIM Blush the incompatibality cracks start while I am still working on the bead. It is exactly the same result I got when I accidentally combined some Effetre Alabaster and Opalino glass. The glass starts cracking and jumping off the mandrel!!!!
Jenn
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Jenn
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2008-12-11, 4:59pm
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aka Spawn Of Flame
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Join Date: Jun 16, 2005
Location: Northeast Ohio
Posts: 2,158
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I've been using Plum for encasing. Specifically, I've used it over EDP and Gelly Pink, but for what it's worth, it hasn't been a "complete" encasing - I only use it over a portion of the bead. I garage at what reads around 960 F on my kiln, but I suspect may be a bit higher. I also use a pretty slow ramp down with holds at 850 and 750.
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2008-12-11, 8:16pm
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Catnip Pusher
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Join Date: May 22, 2006
Location: Hayward, CA
Posts: 1,740
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It's interesting - the bead that cracked was a heart-shaped focal, Plum over Blush, and gravity-shaped. The Plum stayed very translucent on that one. The set that I have that are Plum over clear are pressed beads (which are usually more prone to cracking). And on these the Plum became very opaque!
I think I'll sit on this set for a while (well, not literally - that would surely crack them!!!), to make sure they aren't going to break on down the road. It's too bad, Plum is such a pretty color.
Aimee
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2008-12-11, 9:11pm
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Senior Member
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Join Date: Dec 30, 2006
Location: Michigan
Posts: 247
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I know! It is sad. I love the color that plum is and have made some really pretty beads by layering it over transparent colors like pink champagne and gotten the incompatibility cracks. I just don't dare use it anymore. 
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