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Hi Fire ? from another newbie
Posted: Sat Mar 27, 2004 1:27 am
by Linda Crissman
In reading the board I became interested in the hi-fire technique so I tried it with some scrape last nite. System 96 glass in a 3 - 4" circle. It came out rather nice with the exception of a few "pit" looking spots. I went up to 1650 for 1 1/2 hrs. Any suggestions before I try something serious?
Posted: Sat Mar 27, 2004 11:59 am
by Judy Schnabel
Elsie,
I've been playing with the high fires in clay saucers. Many people go AFAP to 1700 - 1750 but each time I do that my saucer cracks. So I've been going about 600 dph to 1000 then AFAP to 1700 and hold for 90 minutes. They are a neat way to use scrap glass and the 10 1/2" saucer makes a perfect circle for slumping through the drop mold.
Have fun and remember to program an annealing cycle appropriate to the thickness of the finished product. I've been annealing mine for 90 minutes and haven't had any cracks with this new program.
Have you checked out the photos section? Several people have posted pictures of their high fires and pot melts.
Judy
Posted: Sat Mar 27, 2004 2:08 pm
by Katia T.
I´ve done some hi fires that I liked only with float.
I put some scraps, siffed porcelain paint, more scraps, another paint color (total 3 or 4 colors), siffed lots of Borax over all and it really worked, do devit, and good colors.
But remember that I am new to all this too!
Katia
Posted: Sat Mar 27, 2004 2:17 pm
by Judy Schnabel
Hi Katia,
I wondered about doing float and sprinkling powders & frits.
In your post you said "do devit." Did you mean "no" devit?
Judy
Posted: Sat Mar 27, 2004 2:53 pm
by Katia T.
Sorry, yes it is no devit at all!
Katia
Posted: Sun Mar 28, 2004 2:53 am
by Lauri Levanto
Hi-fire is not yet in the dictionary.
Do I gyessw correct
- it is a form of frit casting to produce a flat blank for further use?
-lauri
Posted: Sun Mar 28, 2004 9:36 am
by Judy Schnabel
Lauri,
High fire is putting lots of compatible glass in a saucer and firing it "high." The high temperature melts all the glass together and makes interesting patterns.
Hope this clarifies.
Judy
Posted: Sun Mar 28, 2004 9:43 am
by Jackie Beckman
I've done lots of high-fires . . . no saucer. All the term means is the process temp for the particular procedure is higher than that of normal full-fuse temps. Usually a range between 1600 to 1700 and generally involving a soak at these high temps. Actually, I would think combing qualifies as a high-fire procedure, too.
Posted: Sun Mar 28, 2004 9:47 am
by Jackie Beckman
Probably a pot-melt too, come to think of it.
Posted: Sun Mar 28, 2004 9:50 am
by Brock
Yup, and yup. Plus vitrograph work.
Pick a number. Anything over 1600 (?) is high fire.
Brock