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- เผยแพร่เมื่อ 20 ม.ค. 2023
- I definitely learned a few things on this one… learn along with me!
I’m convinced this glass became unstable because of over firing. Here’s where BE talks about its compatibility and stability testing: www.bullseyeglass.com/is-bulls...
When you consider my piece and the glass history, the purple vitrigraph was initially fired hot enough to become vitrigraph… I don’t do vit, but I’m thinking that’s probably about 1600+?
Then I fired the first time to about 1475.
But then my second firing to add more vit was 1520 with a two hour hold because of another project in the kiln at the same time.
Then my third firing to flip it and spread it out was also 1520 for two hours!
So you can see that the vitrigraph got a TON of heat work. I’m thinking that’s what caused my issues.
So for the future, I will be more mindful about how to limit my firings and heat work… not always the best to just add more glass and toss it back into the kiln.
Polarized lens: I started an Amazon store featuring my favorite glass tools and supplies. I do receive a small commission for any of your purchases - thanks for supporting my free TH-cam content! www.amazon.com/shop/jamaisons...
SSGlassArtStudio on Etsy: www.etsy.com/shop/SSGlassArtS...
Stainless steel mold and fiber liner from Bonny Doon Glass: bonnydoonfusedglasstools.com
My initial firing:
300-1100-60
50-1225-120 (really trying to eliminate bubbles)
350-1475-15
9999-900-180
100-600-0
For what it’s worth, here’s my schedule for the last two firings:
100-800-0
350-1520-120
9999-900-180
100-600-0
#fusedglass #fusing #glassfusing #glass #kiln #kilnformedglass #glassartist #glassart #fyp #howto #bullseyeglass #vitrigraph
![CAMPปลิ้น | EP.79[2/2] มานั่งฮ้านกินข้าวนำกันเด้ออ้ายยย](http://i.ytimg.com/vi/pHIS_Sdy8P8/mqdefault.jpg)
Thank you for showing this project. I learnt alot. It is such a shame it did not come out successfully. I have to admit that I love seeing where your unsuccessful pieces take you. They always seem to have a more successful final outcome. Can’t wait to see what happens to this one
I use polarized filters to examine EVERY piece of glass I create, fusing or lampwork, big or small. It freaks me out to think of someone having a piece crack up or explode on them. 😬
Such a bummer as it’s so pretty! I love those colors together.
It's a beautiful piece. I hate it cracked. But thank you for sharing. I always learn something from your videos. As someone else already commented, thank you for letting us learn at your expense.
It is too bad because the piece is so cool. With that said I am sorry to say that I was glad to see and have you explain your findings. I usually always learn or take away something from your videos. Thanks!
I’m sorry about the cracks, but that is an amazing piece of glass, with the filters on it looks like an alien life form.
Thank you for the technical explanation. Yes, I did learn something. It's a very pretty piece anyway.
Beautiful colours and such a shame about the cracks. Thanks for sharing this as I just learned a valuable lesson at your expense. Worst case scenario for this would be some gorgeous cabochons but I do hope you find a good way to use this glass. As always, thank you for sharing your glass journey :)
Thanks!
That was fascinating. Such a gorgeous piece.
If you consider the number of firings total for that purple, I think you're right about the compatibility shift. I think BE says certain colors cans start shifting after 3 firings. Counting from the vitrigraph pull, you've got 4 at high temperature. My vote is find it a nice stand, put it in a window, and enjoy it for yourself.
It’s my understanding that when we pull vitrigraph that can shift compatibility as well
I was thinking that too, as that’s also a hotter process.
Love the piece. Sorry about the cracks though.😥
You could make some beautiful hearts with that gorgeous glass.
Beautiful piece! I need the light table and polor lenses. My cracks, I think, have to do with the pieces being too thick and not having room to spread on the first firing. But still not sure.
Wow, very educational!!
Bummer. I would wait it out.
It’s lovely. What if you went ahead and made it into a bowl/tray, etc. then kept it in your studio/house to see how it holds up as part of the experiment?
Yes, for now I had to just set it aside but I’m leaning that way. My other option I was considering is using a saw to basically cut out the purple parts and using the rest of the scrap in a different project.
I have some old Spectrum (now Oceanside) glass that I'm checking to see if it will fuse to current 96 COE. I cut strips of clear and the stained glass. I alternated 2 layers of stained glass with 2 layers of 96 clear and checked strips that measured 7" x 1.5" with 4 stained glass and 3 clear. Then full fused. I ordered your polarized filters /film on Amazon and checked the strip between two pieces of film. None had a bright halo but some did have a brown halo. So, I'm wondering if those brown halos are the non-fusible glass. It looks like the majority of stained glass would fuse without issue, if I'm doing this right. Thanks for any help....
Gosh, I am really not sure. I wonder if you could send a photo to Oceanside and ask them?
Thanks! I'll do that.
What a shame because that is so beautiful.
Thanks… it still sits, gathering dust
Would putting this piece through a compression fuse help? I guess with the stresses it may well break on the way up, but if it works, maybe it could dilute them out a bit?
I guess I’m not sure… I feel like once glass is incompatible, how does one get it back into compatibility? Seems it would just continue to shift (further out of range)?
1520 seems really high. Why did you go so high with temp?
Because I really wanted the glass to spread out down to 6mm as much as possible
How long did you anneal ? Write your schedule please . Maybe it is not a coe shifting rather than insufficient annealing to that 3 rd fire and very hot one ? I fixed internal cracks before with another fire to 780c-796 c and very long annealing, it is a beautiful piece . Maybe you can cut with a tile saw the not stressed part as well.
I annealed for three hours
@@JamaisonSchuler if it"s the total annealing process I would have go for 4 hours.
If it's 3 hours on the first stop at 482c , guess it's shifting coe .. it's sounds like enough...
@@fein-glass7622 I held for 3 hours at 900 and then 100dph to 600, then waited u til 100 to open the kiln. Pretty sure this is shifting COE, not annealing issues
@@JamaisonSchuler Yep , you are probably right., bummer for this beauty.
Can you put it back in the kiln, bring it up to say 1480 and then bring it down and anneal the piece for several hours? Can that help relieve the stress some of the stresses?
Not sure? I already anneal for quite a while but I guess it would not hurt if I have another load going in…. More learning?
@@JamaisonSchuler It is such a pretty piece. It seems a shame if it can't be used for something.
I don't think re-annealing would fix anything. It's already shifted compatibility. Too sad.
😊
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