WarmGlass.com

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...

...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...

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...

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...

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,

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 ...

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...

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...

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...

Thanks Brad, for that knowledge and for these friends.

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...

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...

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...

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...

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...

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...

Thank you friends

For Christmas ornaments would it be sensible to use 1/32 of an inch diameter nichrome or copper wire for the U shaped hanger?. Do someone have any suggestion?.

Thank you,

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...

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...