Search found 49 matches
- Mon Apr 19, 2004 2:29 am
- Forum: Techniques and Tools
- Topic: Devitrification experiment... success!!
- Replies: 12
- Views: 15177
Hello, You need to go well over the softening point in order to get a remarkable devit, that is, over 1346°F and for a long period of time. I would say around 1600°F by (at least) half an hour, a dirty piece helps too. But devit is a playful and treacherous animal. Brian is the specialist, amazing...
- Sat Apr 17, 2004 10:48 pm
- Forum: Techniques and Tools
- Topic: Devitrification experiment... success!!
- Replies: 12
- Views: 15177
Re: Devitrification experiment... success!!
...Tyler Frisby's devit post got me to thinkin' about experimenting further. To this end I dirtied up a 19" glass disk and positioned it over a 2 tiered drape mold. I soaked the piece at 1325 for 15 minutes, then ramped it up to 1350 for 5 minutes. Afterward, I let it cool slowly to the anneal...
- Sat Feb 21, 2004 12:18 am
- Forum: Techniques and Tools
- Topic: Dictionary
- Replies: 29
- Views: 36034
Frit or Grain?
This would be time to discuss the term "frit". That word came from the French "fritté" and corresponds to a batch which was melted and cooled before fining, then crushed. I believe that material was produced for centuries by glassmakers who kept secret formulas and who had enoug...
- Sat Jan 31, 2004 12:36 am
- Forum: Techniques and Tools
- Topic: Devit
- Replies: 5
- Views: 6712
Thanks Brian and Ron. Interesting article. I always am wondering what physical-chemical reactions produces anti-devit stuff. I think anti-devit can't drop liquidus temperature enough to prevent crystallization from occur. I might vote for a nucleus dissolution mechanism, however I would like to know...
- Sat Jan 31, 2004 12:07 am
- Forum: Techniques and Tools
- Topic: Xerography question
- Replies: 2
- Views: 4611
Melinda,
I think the culprit might be the TONER composition.
I suggest you to read all this thread:
http://www.warmglass.com/phpBB/viewtopic.php?t=3775
Hope this helps,
I think the culprit might be the TONER composition.
I suggest you to read all this thread:
http://www.warmglass.com/phpBB/viewtopic.php?t=3775
Hope this helps,
- Sat Jan 24, 2004 6:11 pm
- Forum: Techniques and Tools
- Topic: sandwiched photos in float glass
- Replies: 5
- Views: 7595
Hi Mike, I think I am confusing you a bit because it is not English my birth language. Please, find below some answers which are inserted in your quoted message. Hugo, A few questions, First thanks for the info Frop0m Wallace. I have his PDF document and it is really helpful. And by the way, It was ...
- Sat Jan 24, 2004 12:52 am
- Forum: Techniques and Tools
- Topic: sandwiched photos in float glass
- Replies: 5
- Views: 7595
Re: sandwiched photos in float glass
I have been sandswiching laser copies of my photography between sheets of float glass with intersting results. I want to do this without the paper backing and wondered how others may have done so. I am thinking about using overhead transparencies as well as decal transfers. The key for me is that t...
- Mon Jan 19, 2004 9:21 am
- Forum: Techniques and Tools
- Topic: Thermocoule precision?
- Replies: 30
- Views: 25909
Besides Bullseye and Orton procedures to tell your actual kiln temperature mapping, you can test your thermocouple for some points at high temperature. Some metals melting point would be of use. For example, pure Aluminium is 1220°F (660°C), pure Silver is 1761°F (961°C) and Sterling Silver is 1...
- Mon Jan 19, 2004 1:48 am
- Forum: Techniques and Tools
- Topic: Thermocoule precision?
- Replies: 30
- Views: 25909
Re: Thermocoule precision?
Sean wrote in another thread: ". I'm positive the glass is being fired at the temp. the controller is reading. How accurate are the controllers really? I trust it to give pretty much the same reading at the same temperature. If I remember right the thermocoule came with 10% accuracy. Over a 80...
- Mon Jan 12, 2004 9:30 pm
- Forum: Techniques and Tools
- Topic: Happy Birthday WG!!
- Replies: 11
- Views: 11860
Thanks
Thanks Brad, for that knowledge and for these friends.
- Sun Dec 21, 2003 1:07 am
- Forum: Techniques and Tools
- Topic: Information on Jewels production?
- Replies: 1
- Views: 3192
Information on Jewels production?
Hello, I am seeking for books or information dealing with Jewels production as a warmglass technique. I would like to study technical procedures, challenges, design trends, etc.. I intend making warm glass pieces to be used in jewelry production like earrings, necklaces and so. (We call it "bij...
- Tue Dec 16, 2003 12:42 am
- Forum: Techniques and Tools
- Topic: kiln element proximity to insulation
- Replies: 41
- Views: 33828
Tony, According to my notes, the temperature in which ceramic refractories bearing amorphous silica start the transformation to crystalline silica is 1000°C or 1832°F. That is below 1260°C or 2300°F, the maximum working temperature for IFB. That's why I have chosen 980°C or 1796°F as my normal...
- Mon Dec 15, 2003 4:41 pm
- Forum: Techniques and Tools
- Topic: kiln element proximity to insulation
- Replies: 41
- Views: 33828
My two cents, Kanthal A1 is magnetic while Nichrome is not. The rate of power delivery from the element at high temperatures will be proportional to the differences between element temperature and medium temperature both to the fourth power: Energy Delivered ~ (Telement)exp 4 - (Tmedium)exp 4 So, if...
- Tue Nov 25, 2003 2:13 pm
- Forum: Techniques and Tools
- Topic: Nickel-Iron glass compatible alloy
- Replies: 5
- Views: 7584
Eureka? - Light bulbs lead-in wires
I think I have found that darn wire. Each incandescent light bulbs has two lead-in wires to feed electricity to the tungsten filament. According to http://www.mgg-lamps.de/pdf/07E.pdf these wires called "Dumet" should be compatible with glass (light bulbs are made with 90 COE glass). The w...
- Tue Nov 25, 2003 12:34 pm
- Forum: Techniques and Tools
- Topic: Nickel-Iron glass compatible alloy
- Replies: 5
- Views: 7584
Hi Brian, It's not a cold stuff but a special alloy designed to fit Soda-Lime-Silica glasses. It's for glass-to-metal seals. And yes, here in Argentina you have to buy a full spool of wire. I thought that up-there it would be easier to get two or three feet and try it in the kiln. According to the s...
- Mon Nov 24, 2003 3:28 pm
- Forum: Techniques and Tools
- Topic: Nickel-Iron glass compatible alloy
- Replies: 5
- Views: 7584
Nickel-Iron glass compatible alloy
Hello, Have someone heard about this alloy?. It was designed to fit soda-lime glasses. I thought it would be of use in warmglass creations. Below this I quoted some links for what it's worth. Seek for Alloy 48 http://www.edfagan.com/htmDocs/thermal.htm http://www.specialmetals.com/products/publicati...
- Tue Nov 18, 2003 10:52 pm
- Forum: Techniques and Tools
- Topic: attaching hangers to christmas ornaments
- Replies: 6
- Views: 10190
- Tue Nov 18, 2003 8:45 pm
- Forum: Techniques and Tools
- Topic: attaching hangers to christmas ornaments
- Replies: 6
- Views: 10190
- Mon Nov 17, 2003 9:26 pm
- Forum: Techniques and Tools
- Topic: Wire as inclusion
- Replies: 1
- Views: 3224
Wire as inclusion
I have bought a cheap ashtray with the only purpose of making a "scientific" dissection. I guess it is made using two float 1/8 sheets and a sheet of window screen laminated in the middle. We have put the piece in the polariscope and no stresses are evident. The like-window screen inclusio...
- Mon Nov 17, 2003 8:53 pm
- Forum: Techniques and Tools
- Topic: Noisy Controller- Is this normal?
- Replies: 11
- Views: 11579
Mmmm... I have my Sentry 2.0 just on my knees now, and it's full electronic. It's a low voltage-low current output only to command main switches. In fact, a Sentry 2.0 can lead either mechanical relays or solid state relays. I would investigate where the loud noise is coming from. I guess it is orig...