WarmGlass.com - Search

Search found 171 matches

Go to advanced search

by Bonnie Rubinstein
Mon Sep 30, 2013 3:21 pm
Forum: Techniques and Tools
Topic: Continuing cracks- large glass! Why?
Replies: 24
Views: 11994

Re: Continuing cracks- large glass! Why?

I took a thermocouple out of another kiln, inserted it and tested.

Also in talking the the manuf. of the kiln, I believe it was time for a new one.
by Bonnie Rubinstein
Mon Sep 30, 2013 3:11 pm
Forum: Techniques and Tools
Topic: Continuing cracks- large glass! Why?
Replies: 24
Views: 11994

Re: Continuing cracks- large glass! Why?

[attachment=0]Cracked glass 003.jpg[/attachment] here is the pic. The crack just broke the piece, unaffected by design or shapes. The crack also has another crack about 4" from the bottom, making that triangle -( the visual "line" going off to the right is a just line of layered glass...
by Bonnie Rubinstein
Mon Sep 30, 2013 12:10 pm
Forum: Techniques and Tools
Topic: Continuing cracks- large glass! Why?
Replies: 24
Views: 11994

Re: Continuing cracks- large glass! Why?

Hi Laurie, yep, it' s a bummer... after we spoke, I still lost another piece. I don't think it is my relays, though.. they seem to be okay. It has to be the anneal schedule and heating issues withing the kiln. Also, I was going 100 dph after the anneal. maybe I should go slower, as Dana suggested.
by Bonnie Rubinstein
Mon Sep 30, 2013 10:57 am
Forum: Techniques and Tools
Topic: Continuing cracks- large glass! Why?
Replies: 24
Views: 11994

Re: Continuing cracks- large glass! Why?

yes, I plan to an even heating test today on my newly raised-up-on-feet shelf, and new thermocouple. so, if it is uneven, what do fusers do, if they can't easily replace elements? (besides work on a anneal that works).
by Bonnie Rubinstein
Sun Sep 29, 2013 10:32 pm
Forum: Techniques and Tools
Topic: Continuing cracks- large glass! Why?
Replies: 24
Views: 11994

Re: Continuing cracks- large glass! Why?

Yes, the glass was about 1" from the insulation. ( I need to make the glass 26".) the walls of the kiln are blanket insulation. So, the walls of the kiln are not giving off the heat of brick. Do you think I need to shorten the anneal? Spectrum did advise the 3 hour anneal, but I can shorte...
by Bonnie Rubinstein
Sun Sep 29, 2013 8:17 pm
Forum: Techniques and Tools
Topic: Continuing cracks- large glass! Why?
Replies: 24
Views: 11994

Re: Continuing cracks- large glass! Why?

The glass is 26", and the kiln is 28 1/2" deep, so it is close to the insulation in the width direction. I dammed the 26" sides. I used all cathedral glass, areas of only clear layers across the bottom and top of the artpiece and the middle has a lot of blues and aquas. A 3-D fuse.. n...
by Bonnie Rubinstein
Sun Sep 29, 2013 6:38 pm
Forum: Techniques and Tools
Topic: Continuing cracks- large glass! Why?
Replies: 24
Views: 11994

Continuing cracks- large glass! Why?

Please help me do the detective work..as I am bewildered..I wish I could say I have solved my saga of poorly annealed larger pieces.. but my latest piece to replace the cracked ones, cracked also! It is 37” x 26” x 3/8” thick. Because my kiln runs about 15 deg. too hot.. I set the following schedule...
by Bonnie Rubinstein
Tue Sep 24, 2013 5:26 pm
Forum: Techniques and Tools
Topic: Help- fusers of LARGER (over 2’) pieces
Replies: 14
Views: 6843

Re: Help- fusers of LARGER (over 2’) pieces

Performed my test with a second pyrometer. It showed my kiln is running 16 deg. less than other, so it does run hotter. I will now anneal lower, at 930, and hold again at 775 and 600. I have spoken at length with Spectrum, and have a VERY conservative schedule to try- it will take 1 day, 3 hours to ...
by Bonnie Rubinstein
Mon Sep 23, 2013 10:46 am
Forum: Techniques and Tools
Topic: Help- fusers of LARGER (over 2’) pieces
Replies: 14
Views: 6843

Re: Help- fusers of LARGER (over 2’) pieces

That makes alot of sense, although disconcerting. We depend on the accuracy of these tools so much for the success of our hard work. I don't know how difficult it is to replace a thermocouple. But I will be testing mine later today. I will be annealing at a lower temp from now on, as you recommended...
by Bonnie Rubinstein
Mon Sep 23, 2013 8:47 am
Forum: Techniques and Tools
Topic: Help- fusers of LARGER (over 2’) pieces
Replies: 14
Views: 6843

Re: Help- fusers of LARGER (over 2’) pieces

very possibly. I will be setting up a test today with another pyrometer.
by Bonnie Rubinstein
Sun Sep 22, 2013 11:00 pm
Forum: Techniques and Tools
Topic: Help- fusers of LARGER (over 2’) pieces
Replies: 14
Views: 6843

Re: Help- fusers of LARGER (over 2’) pieces

I have so many notebooks of schedules through the years. This is what my most recent one is based on my own experience, and input and reading. I stop it at 1370 to watch how it is fusing, and then just bring it up to 1385 for full fuse... I believed ramping alittle faster after 1370 up another 15 de...
by Bonnie Rubinstein
Sun Sep 22, 2013 10:43 am
Forum: Techniques and Tools
Topic: Help- fusers of LARGER (over 2’) pieces
Replies: 14
Views: 6843

Re: Help- fusers of LARGER (over 2’) pieces

Thank you all for this input! this is an eye-opener, as when I have had issues in the past, I have heard 'anneal longer', but I can see that this would be problematic to anneal longer at the wrong temp! I will readjust my schedule. I have another 2' x 3' piece in the kiln, that I need to fuse, and I...
by Bonnie Rubinstein
Sat Sep 21, 2013 6:38 pm
Forum: Techniques and Tools
Topic: Help- fusers of LARGER (over 2’) pieces
Replies: 14
Views: 6843

Re: Help- fusers of LARGER (over 2’) pieces

will do .

thank you Don.

I am curious to know if more artists out there fuse large scale artwork??

I would like to get your input and also connect about it.. thanks.
by Bonnie Rubinstein
Sat Sep 21, 2013 10:05 am
Forum: Business Topics
Topic: Shipping large piece-best way?
Replies: 25
Views: 20140

Re: Shipping large piece-best way?

Spectrum said that they do not recommend over 3 firings. I only did 2 on pieces that were issues.

Had another tragic glass day yesterday- please see my post on techniques board.
by Bonnie Rubinstein
Sat Sep 21, 2013 10:01 am
Forum: Techniques and Tools
Topic: Help- fusers of LARGER (over 2’) pieces
Replies: 14
Views: 6843

Help- fusers of LARGER (over 2’) pieces

Okay-we know glass is tricky. I am committed to conquering this issue…. I have had some recent breakages with large glass. After cooling , and all is fine, it breaks. The glass was 2’ x 3’ and 2’ x 4’; flat about ¼” to 3/8” thick. I use System 96, and wonder if anyone has consistent success (I used ...
by Bonnie Rubinstein
Fri Sep 20, 2013 10:00 am
Forum: Business Topics
Topic: Shipping large piece-best way?
Replies: 25
Views: 20140

Re: Shipping large piece-best way?

hmmm.. I am only going up to 1385. But I should give Spectrum a call.

thanks, Bert.
by Bonnie Rubinstein
Fri Sep 20, 2013 9:23 am
Forum: Business Topics
Topic: Shipping large piece-best way?
Replies: 25
Views: 20140

Re: Shipping large piece-best way?

[*]Glass reflects the stress level after it's latest anneal. ? please explain
by Bonnie Rubinstein
Fri Sep 20, 2013 8:39 am
Forum: Business Topics
Topic: Shipping large piece-best way?
Replies: 25
Views: 20140

Re: Shipping large piece-best way?

hotel/motels/food will eat up the rest! .. and time off from work and parenting. sorry to say, it is not in the cards. If I use UPS, it will be $320 for boxing, shipping and insurance. It is going in an over-sized (double) box, which dictates that it go by truck. I believe it still passes through al...
by Bonnie Rubinstein
Thu Sep 19, 2013 1:50 pm
Forum: Business Topics
Topic: Shipping large piece-best way?
Replies: 25
Views: 20140

Re: Shipping large piece-best way?

This is all so helpful.. I am making copious notes.. one more concern.. the glass is only 1/4" thick, slightly less in some areas. I am concerned that it is not thick enough for shipping, and am considering fusing again with added glass for more strength-- which will be difficult and may compro...
by Bonnie Rubinstein
Thu Sep 19, 2013 1:12 pm
Forum: Business Topics
Topic: Shipping large piece-best way?
Replies: 25
Views: 20140

Re: Shipping large piece-best way?

This is not an extremely costly piece, so the trip (although I would love to visit Boston!) would not be worth it.

Thanks for all the packaging info. I just heard back from the client, who said to take our chances w/ UPS. I will be in the room when he boxes it, I assure you!

Go to advanced search

Warm Glass

2575 Old Glory Road, Suite 700
Suite 700
Clemmons, NC 27012
Phone: (336) 712 8003
Email: wg@warmglass.com