Lampwork Etc.
 
AKDesign

LE Live Chat

Enter Live Chat

No users in chat




Beads of Courage


 

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

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

Reply
 
Thread Tools
  #31  
Old 2013-10-15, 8:52am
Lisi's Avatar
Lisi Lisi is offline
one day at a time
 
Join Date: Jun 27, 2005
Location: We are MOVING!!!
Posts: 8,319
Default

Maybe what she needs is bead release that makes it easier to remove the beads from the mandrel. I have read that the blue sludge is not as easy to get the beads off the mandrels as the dark grey sludge with the graphite in it. Even easier is a dark grey graphite release like KRAG Mudd. If you are making large beads, you really need to have a bead release you don't have to fight with.

Donna, have you ever tried KRAG Mudd?? If not, PM me and I will send you a little sample of mine.
__________________
You live in a world of money. Money means choices. No money, no choices. Welcome to reality.
Melody (Marlee Matlin) from Switched at Birth

Last edited by Lisi; 2013-10-15 at 8:55am.
Reply With Quote
  #32  
Old 2013-10-15, 11:28am
28676bhe 28676bhe is offline
Senior Member
 
Join Date: Apr 08, 2011
Location: NC
Posts: 1,687
Default

I use Mama G's (and love it), and I keep it fairly thin. I have noticed, though, that as it dries it does take on a thicker look and feel

Real or imagined?
__________________

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

Barbara
Reply With Quote
  #33  
Old 2013-10-15, 8:42pm
jaci's Avatar
jaci jaci is offline
Glass-aholic
 
Join Date: Mar 21, 2007
Location: CT, tolland CT
Posts: 4,332
Default

I'm using a new batch of blue sludge and haven't seen any cracking issues at all with it. I've had it for about 6 weeks now. I got super blue sludge and dip n go. No problems with either. I made a few thinner beads to try and see if they would break. I got no breaks.
__________________
Minor 10lpm Oxy-Con + HH on Propylene . . . . . .

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.
hand dyed silk ribbons in many colors!
WASHERS & TOPPERS - layering components for interchangeable glass topper and to use in other jewelry/metalwork.:
Reply With Quote
  #34  
Old 2013-10-15, 8:46pm
yellowbird's Avatar
yellowbird yellowbird is offline
Senior Member
 
Join Date: Jan 23, 2006
Posts: 1,229
Default

[Q


Which ingredient in bead release could have the expansion capabilities?[/quote]

h2o is the only one I can think of
even after the release is dry it contains water until it reaches 212 *
the boiling point at which time it is steam












.
Reply With Quote
  #35  
Old 2013-10-16, 2:02am
wendbill's Avatar
wendbill wendbill is offline
More ideas than talent
 
Join Date: Sep 17, 2005
Location: Melbourne, Oz
Posts: 2,565
Default

Quote:
Originally Posted by yellowbird View Post
[Q


Which ingredient in bead release could have the expansion capabilities?
h2o is the only one I can think of
even after the release is dry it contains water until it reaches 212 *
the boiling point at which time it is steam

.[/quote]

That makes sense.

I wonder if some bead releases hold temperature better than others. And therefore one may be more forgiving than others on that score.

Different bead releases seem to require different thickness coatings as well. Maybe that plays into it somehow.
__________________
Wendy


To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
Reply With Quote
  #36  
Old 2013-10-16, 4:46am
Anne Londez's Avatar
Anne Londez Anne Londez is offline
Senior Member
 
Join Date: Apr 11, 2006
Location: Switzerland
Posts: 575
Default

I've been teaching beadmaking for over 10 years now and I am pretty definite that this is a shocked bead issue.

The question is not just how thin your beads are, it is how long you keep them in the press without reheating them and how long you reheat the glass after the bead has been in contact with the metal.
The thinner the bead, the faster it will lose heat so the faster you need to put it back in the flame. Even if most of the bead stays hot enough, the thinner layer that is over the mandrel hole may have been shocked (i.e. the glass got below the temp where it is elastic enough to handle stress) and if that part of the bead is not taken back to a soft state, the stress will not be erased and the bead will crack because it will have been shocked.
I would advise you to press quickly, go back in the flame immediately and reheat carfeull along the mandrel on both sides. If the pressing is not what you want, do it in stages until you are sure that you get the timing right. Does that make sense ?
__________________
Anne

Sea Rocks Tutorial
To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
- Ebook
To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
- Follow me on
To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
- My
To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
shop
Reply With Quote
  #37  
Old 2013-10-16, 7:00am
yellowbird's Avatar
yellowbird yellowbird is offline
Senior Member
 
Join Date: Jan 23, 2006
Posts: 1,229
Default

Anne I agree !
It makes sense that heat is the problem.

I only offered the illustrate to show that after a mandrel is in the flame for a few seconds it is impossible for it to cause a bead to crack.
Reply With Quote
  #38  
Old 2013-10-16, 9:05am
FosterFire's Avatar
FosterFire FosterFire is offline
SCIENCE Teacher!
 
Join Date: Jul 19, 2005
Location: Wylie, TX
Posts: 2,112
Default

I would also look at your clear. I have used Lauscha forever and love it. Some years ago I had a problem with certain rods of clear, but not all of it. Something to think about anyway.
__________________

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

Reply With Quote
  #39  
Old 2013-10-16, 9:59am
Lisi's Avatar
Lisi Lisi is offline
one day at a time
 
Join Date: Jun 27, 2005
Location: We are MOVING!!!
Posts: 8,319
Default

Quote:
Originally Posted by FosterFire View Post
I would also look at your clear. I have used Lauscha forever and love it. Some years ago I had a problem with certain rods of clear, but not all of it. Something to think about anyway.
I was thinking the same thing. We have so many brands of clear out there now and there is no way of knowing if they are truly compatible with the brand(s) of 104 COE we choose to mix it with. They only thing we can hope to do is keep up with reports of compatibility issues. It seems like every time I read about cracking beads, it's from mixing all these lines (brands) of glass together.

If encasing with clear glass, I say use DH with DH, Effetre with Effetre, and CiM with CiM, just some examples here. But of course, there are no guarantees with using glass in the same lines either.
__________________
You live in a world of money. Money means choices. No money, no choices. Welcome to reality.
Melody (Marlee Matlin) from Switched at Birth
Reply With Quote
  #40  
Old 2013-10-16, 3:47pm
28676bhe 28676bhe is offline
Senior Member
 
Join Date: Apr 08, 2011
Location: NC
Posts: 1,687
Default

Incompatibility cracks usually aren't straight, right?
__________________

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

Barbara
Reply With Quote
  #41  
Old 2013-10-16, 6:56pm
Lisi's Avatar
Lisi Lisi is offline
one day at a time
 
Join Date: Jun 27, 2005
Location: We are MOVING!!!
Posts: 8,319
Default

Quote:
Originally Posted by 28676bhe View Post
Incompatibility cracks usually aren't straight, right?
Incompatibility cracks are usually not going to break in half straight down the mandrel. Donna's beads have a thermal shock problem rather than incompatibility, I'm pretty sure.

As far as any kind of cracking goes, I have read dozens of threads over the last 11 years that I have been lampworking and many of them are referring to clear encasing and incompatibility cracks. That's why everyone needs to be careful with clear and do a little research and take notes on what colors and particular brand combinations other artists have found to be problematic.
__________________
You live in a world of money. Money means choices. No money, no choices. Welcome to reality.
Melody (Marlee Matlin) from Switched at Birth
Reply With Quote
  #42  
Old 2013-10-18, 12:28am
Anne Londez's Avatar
Anne Londez Anne Londez is offline
Senior Member
 
Join Date: Apr 11, 2006
Location: Switzerland
Posts: 575
Default

Incompatibility cracks are very different from what Donna has. I've had problems with a Lauscha clear years ago and the beads cracked 6 months later, all at the same time and with a webbing pattern to the cracks. Thankfully I still had all of them !
__________________
Anne

Sea Rocks Tutorial
To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
- Ebook
To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
- Follow me on
To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
- My
To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
shop
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 4:52pm.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Your IP: 18.232.51.69