Lampwork Etc.
 
Mountain Glass Arts

LE Live Chat

Enter Live Chat

No users in chat


Donate via PayPal to donate@lampworketc.com

Beads of Courage


 

Go Back   Lampwork Etc. > Library > Tips, Techniques, and Questions

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

Reply
 
Thread Tools
  #1  
Old 2017-11-06, 8:34pm
Al Miaco's Avatar
Al Miaco Al Miaco is offline
Member
 
Join Date: Sep 24, 2016
Posts: 60
Default raku should NOT look like this

My surprise when I opened the kiln. All my raku on red had not just cracked, they had presented themselves on the half-shell, so to speak.



Any insight on what I did wrong would be great. I made them by
-make a round with red
-encasing red
-rolling in raku
-oxidising flame
-quick cool with marver
-encase once more

My black beads do not split and look fine, but I only encase once. Why twice for the red? To avoid the darkness the raku brings to the bead. Can't see it when I use black as my base but ruins the red when I place the raku without encasing first. Obviously it is the double casing, but why? I am using COE104 effete glass and clear.
Reply With Quote
  #2  
Old 2017-11-06, 9:35pm
Eileen's Avatar
Eileen Eileen is offline
Loving learning
 
Join Date: Oct 11, 2010
Location: Florida
Posts: 11,413
Default

It was not the raku most likely, but encasing the red.

If you want to encase red, try a clear core, encase with red, then encase with white.
__________________
My current "hot" fantasy involves a senior discount on glass & tools!
Reply With Quote
  #3  
Old 2017-11-07, 5:29am
echeveria's Avatar
echeveria echeveria is offline
Senior Member
 
Join Date: Aug 31, 2006
Location: Knoxville, TN
Posts: 1,951
Default

Is the raku 104 or 96? Honestly those look thermal to me though
__________________
Kathy
Reply With Quote
  #4  
Old 2017-11-07, 6:03am
neagle's Avatar
neagle neagle is offline
Peerless Thread Killer
 
Join Date: Jul 20, 2007
Location: Mt. Chokula
Posts: 1,148
Default

It looks thermal, but reds, oranges, yellows don't necessarily encase well. Like Eileen said, make them with a clear core. They are much less likely to crack.
__________________
Check out my Etsy shop:
To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.

Reply With Quote
  #5  
Old 2017-11-07, 6:06am
Al Miaco's Avatar
Al Miaco Al Miaco is offline
Member
 
Join Date: Sep 24, 2016
Posts: 60
Default

Thanks for the reply Eileen. Seems I remember now reading about using a clear base, but for some reason I thought perhaps I was special. Or when mixing different manufacturers of 104. Anyways, I will give your suggestion a try.

Kathy; I am using the 96 octane. Have read it should not be a problem as long as I do not exceed 10% and I am sure one roll in the raku would not come close to that threshold.

No worries though. The beads were interesting but only by so much. I am thinking I can get the result I want with frit.

Cheers
Reply With Quote
  #6  
Old 2017-11-07, 2:29pm
dusty dusty is offline
Senior Member
 
Join Date: Jul 18, 2007
Posts: 568
Default

Quote:
Originally Posted by Al Miaco View Post
Kathy; I am using the 96 octane. Have read it should not be a problem as long as I do not exceed 10% and I am sure one roll in the raku would not come close to that threshold
That only applies if you're not encasing. If you're encasing, 1% is too much - don't mix at all.
Reply With Quote
  #7  
Old 2017-11-07, 8:08pm
echeveria's Avatar
echeveria echeveria is offline
Senior Member
 
Join Date: Aug 31, 2006
Location: Knoxville, TN
Posts: 1,951
Default

I never have any luck encasing 96 with 104. But the cracks I get are not along the mandrel either, so maybe it is the red.
__________________
Kathy
Reply With Quote
  #8  
Old 2017-11-08, 12:13am
Ravenesque Ravenesque is offline
Naysayer
 
Join Date: Sep 22, 2009
Posts: 1,202
Default

The red is 96 but clear is 104 correct? Halved is usually thermal, but I think it's incompatibility in this case.
Reply With Quote
  #9  
Old 2017-11-08, 5:07am
Al Miaco's Avatar
Al Miaco Al Miaco is offline
Member
 
Join Date: Sep 24, 2016
Posts: 60
Default

Ravenesque: All the glass (red and clear are 104) and the raku is 96 powder. So, a marble base of red 104, encased with super clear 104, thin layer of 96 raku powder, then clear 104 again.
Reply With Quote
  #10  
Old 2017-11-08, 3:45pm
LarryC LarryC is offline
Senior Member
 
Join Date: Mar 07, 2011
Location: Northern California
Posts: 1,981
Default

Quote:
Originally Posted by Al Miaco View Post
Thanks for the reply Eileen. Seems I remember now reading about using a clear base, but for some reason I thought perhaps I was special. Or when mixing different manufacturers of 104. Anyways, I will give your suggestion a try.

Kathy; I am using the 96 octane. Have read it should not be a problem as long as I do not exceed 10% and I am sure one roll in the raku would not come close to that threshold.

No worries though. The beads were interesting but only by so much. I am thinking I can get the result I want with frit.

Cheers
Honestly, thats absurd. You invite failure by any mixing outside of families of COEs. Never mix 104 with 96 or 90.
Reply With Quote
  #11  
Old 2017-11-08, 5:06pm
SGA's Avatar
SGA SGA is offline
Fried Cat
 
Join Date: Jan 02, 2011
Posts: 619
Default

Quote:
Originally Posted by Al Miaco View Post
Ravenesque: All the glass (red and clear are 104) and the raku is 96 powder. So, a marble base of red 104, encased with super clear 104, thin layer of 96 raku powder, then clear 104 again.
Larry isn’t quite accurate. You can mix 96 with 104 in many applications. Otherwise FritGirl and Val Cox wouldn’t be in existence. So you’re on the right track by keeping it thin and minuscule. But it can be tricky. I would probably not encase fickle colors and use 96 coe at the same time. If you want a design, perhaps add an encased frit or enamel stringer on top of red. No encasement our the bead itself.

I know Kris Shiable uses 96 exclusively in her fit beads because she loves several layers of 96, and lots of frit. But generally speaking Dusty is correct. 5 or 10% works well as surface design but not every single color. Some 104 may be 105/106. Some 96 may be off as well. The viscosity has a lot to do with it, etc. Raku frit on unencased opaque red is gorgeous, try that and not the powder. Julie Nordine uses a lot of both colors in her palette. Though she may use 104 Raku, I think most of us prefer 96.

Last edited by SGA; 2017-11-08 at 5:11pm.
Reply With Quote
  #12  
Old 2017-11-09, 3:11am
Ravenesque Ravenesque is offline
Naysayer
 
Join Date: Sep 22, 2009
Posts: 1,202
Default

I agree, lampworkers have been using 96 frits on 104 forever now, myself included.

Quote:
Originally Posted by Al Miaco View Post
Ravenesque: All the glass (red and clear are 104) and the raku is 96 powder. So, a marble base of red 104, encased with super clear 104, thin layer of 96 raku powder, then clear 104 again.
I see, I was confused by 96 octane, I've never heard of it. Try one with the clear core.
If the red is a CIM color, make sure it's not an "opal", those don't like to be encased.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump




All times are GMT -7. The time now is 4:01am.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Your IP: 18.207.254.88