Lampwork Etc.
 
TrueDesign

LE Live Chat

Enter Live Chat

No users in chat


Jelveh Designs - Glass Beads Torched One-by-One

Beads of Courage


 

Go Back   Lampwork Etc. > Library > Boro Room

Boro Room -- For Boro-related tips, techniques, and questions.

Reply
 
Thread Tools
  #1  
Old 2012-12-24, 4:08pm
mtnlaurel's Avatar
mtnlaurel mtnlaurel is offline
Renee
 
Join Date: Dec 21, 2006
Location: Carrollton, GA
Posts: 244
Default Batch annealing help?

Hi! I made a bunch of clear icicles and need to anneal them. Do I have to bring kiln up slowly, or can I just put them in a kiln at 1070? I'm used to soft glass and small boro beads- I didn't make the icicles at home, so still want to anneal. Thanks! Renee
__________________

To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.


"All unattended children will be given an expresso and a FREE puppy!"
Reply With Quote
  #2  
Old 2012-12-24, 4:32pm
Onekura's Avatar
Onekura Onekura is offline
Bernhard Riegler
 
Join Date: Jun 03, 2010
Location: Northland - New Zealand
Posts: 452
Default

bring it up slowly. Avoid any heat shock to be on the safe side
__________________

To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.

Bernhard Riegler - Bay of Islands - New Zealand

To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
Reply With Quote
  #3  
Old 2012-12-24, 4:57pm
Sue in Maine's Avatar
Sue in Maine Sue in Maine is offline
Senior Member
 
Join Date: Jun 14, 2005
Location: The Rocky Coast State!
Posts: 6,620
Default

I'm a better safe than sorry kinda gal as well. Boro is tougher but why take chances? Don't ramp it up full speed.

Sue
__________________
Sue Walsh
The past is history,
The future is a mystery
and the present is a gift.
Reply With Quote
  #4  
Old 2012-12-24, 5:18pm
mtnlaurel's Avatar
mtnlaurel mtnlaurel is offline
Renee
 
Join Date: Dec 21, 2006
Location: Carrollton, GA
Posts: 244
Default

That was my idea too, but thought I'd ask! Thanks!
__________________

To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.


"All unattended children will be given an expresso and a FREE puppy!"
Reply With Quote
  #5  
Old 2012-12-24, 11:25pm
Alaska Alaska is offline
Alaska Boro
 
Join Date: Dec 10, 2009
Location: Anchorage, Alaska
Posts: 1,065
Default

"Contemporary Lampworking" indicates that the temperature rise from room temperature to annealing temperature should be at a rate that should not exceed 27 degrees F per minute for a piece that is one inch thick. For 1/2 inch 108 degrees F per minute.

If your aim temperature is 1050 F then 1050 divided by 27 is 39 minutes for a maximum rise time for 1 inch material.

In my case the kiln has no ramp up as it takes 57 minutes to reach annealing temperature which is adequate for a 1.25 inch piece from cold to hot. For a 2 inch piece 156 minutes for a ramp up time, etc.
Reply With Quote
  #6  
Old 2012-12-25, 12:58am
toothpayne's Avatar
toothpayne toothpayne is offline
Co-owner
 
Join Date: Jun 22, 2009
Location: South Jordan Utah
Posts: 313
Default

Good information. Thanks for sharing the formula.
__________________

To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.

PHONE: (385) 237-3365
OXYGEN 24 HOUR TEXT LINE: (801) 949-0575
LAMPWORKING 24 HOUR TEXT LINE: (801) 949-0576
Reply With Quote
  #7  
Old 2012-12-27, 9:26am
Cosmo's Avatar
Cosmo Cosmo is offline
ManBearPig
 
Join Date: Jun 28, 2005
Location: Roanoke, VA
Posts: 8,540
Default

I throw stuff in at room temp and ramp it up full speed all the time. That includes marbles, pendants, and whatever else. I've never lost one to thermal shock. The key I've found is to make sure you hold it at temperature long enough to let the temperature equalize throughout the piece before starting the annealing time and the ramp back down.
__________________

To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
Reply With Quote
  #8  
Old 2013-01-30, 7:54am
Troyd Troyd is offline
Member
 
Join Date: Sep 01, 2012
Location: Chicago Area
Posts: 41
Default

Thanks Alaska
__________________

To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.

Carlisle on Tanks/Scorpion on Oxy-con
Reply With Quote
  #9  
Old 2013-01-30, 9:14am
e. mort's Avatar
e. mort e. mort is offline
Senior Member
 
Join Date: Nov 06, 2005
Location: Austin - Texas
Posts: 2,708
Default

Cosmo, how would you handle a 3" marble that needs to be reworked a bit? It has already been annealed, but I decided to do a bit of grinding on it, and rework it in the flame. I am thinking that ramping it up over 2-3 hours would work, but I am not sure. Don't want to lose this one for sure!
__________________
Eric

The world is a dangerous place, not because of those who do evil, but because of those who look on and do nothing. ---- Albert Einstein


To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
Reply With Quote
  #10  
Old 2013-01-30, 9:35am
deb tarry deb tarry is offline
Senior Member
 
Join Date: Jan 29, 2009
Posts: 1,958
Default

Eric I just wanted to share that I have just successfully reworked a marble that was two inches. I put it into the kiln and it ramped (full) up from room temperature to 950f. It actually went through several sessions as I wanted to see how much I could throw at it. When I finally did rework it I grabbed it with tongs and got it into the flame then punty''d up right away then really got the heat to it til it glowed all the way inside. reworked and put it back into the kiln. The only thing I would do different is I would have a tray made out of glass for the marble to rest in the kiln as I had to clean off some kiln dust before I reworked it.
After it sits in the kiln at 950f I do ramp to 1050 for 2 hours then down to 850f for 1 1/2 hours then off.
Pendants and such I will just pop into the kiln even in mid cycle but I wouldn't recommend doing this with something thicker.
__________________

To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
Reply With Quote
  #11  
Old 2013-02-01, 12:24pm
Cornbread's Avatar
Cornbread Cornbread is offline
Formerly Bakerman44
 
Join Date: Dec 02, 2010
Location: Shreveport, Louisiana
Posts: 316
Default

Quote:
Originally Posted by Cosmo View Post
I throw stuff in at room temp and ramp it up full speed all the time. That includes marbles, pendants, and whatever else. I've never lost one to thermal shock. The key I've found is to make sure you hold it at temperature long enough to let the temperature equalize throughout the piece before starting the annealing time and the ramp back down.
This is my experience also. I keep stuff in the kiln for days and weeks at a time waiting to be used. I never pay it any special attention. I would't put any large marbles in there this way but 1" and smaller, you should be good to go.
__________________
Life is like cornbread....ain't nothin' wrong with it!


To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
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 12:22am.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Your IP: 54.235.6.60