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DoodleLou
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« on: June 25, 2010 09:24:10 PM »

Hey Fusers...can ya help a newbie out here, please?  So I just got my kiln.  It's a Paragon Home Artist with a Sentry Xpress controller.  I've taken some sample fusing schedules off a website just to get started with. 

I'm able enter the whole program into the controller but I get confused when the schedule says to go from something like 1450 degrees down to 950 degrees AFAP (as fast as possible).  You have to open the kiln to crash cool/flash cool it, right?  Just until it gets to 950 then close it to soak for the time indicated? Right?

And when it comes to the programming:  What's ramp rate do you enter for AFAP?    Just zero it out? Or run it at the maximum?  I've read the manual that comes with the kiln and I'm still sorta stumped.  And of course, now it's the weekend and I've finally got the time to devote to the kiln...and I'm doing it wrong!   Undecided 

It's the learning curve...Once I get it, I'll get it, but in the meantime... Huh

What happens if I don't crash cool it?  It'll devitrify, won't it?  I mean, if I leave it to cool down TOO slow, devitfrication forms, right? Too much heat, too long makes for crystallized glass. ?? 

I got tons to learn.  Tons. But I gotta say I'm having fun so far!  Nothing like a new toy and a free weekend make me a happy crafter!
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« Reply #1 on: June 28, 2010 04:05:36 AM »

On my kiln "FULL" is one click down from 0000 and that will give you AFAP.

If you don't do the AFAP to 950 (960 for Bullseye glass), you run the risk of devitrification.

I've never opened my kiln to flash cool it, because that FULL or AFAP ramp will do it for me. You also need heat resistant gloves and possibly special glasses (can't recall the type) if you look into the kiln. So I make a point never to open the kiln until it's less than 125 degrees.

Hope this helps!
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DoodleLou
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« Reply #2 on: June 29, 2010 09:25:29 AM »

Thanks for the answer!  I've read a little more through other stained glass/warm glass sites and it's agreed that flash/crash cooling is an old school method.  So I'll stop thinking that's a good idea immediately. Grin  Don't want to damage my new toy right after I got it!

Got to admit though, I'm pretty sure I learned that idea from an instructor I had for a two day class a couple of years ago.  And that time I questioned some of her teaching methods. Now I'm finding that my insticts about the things she was teaching was right.

Thanks again for getting back to me!
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« Reply #3 on: June 29, 2010 05:22:34 PM »

It really depends on your kiln. If you've got the computer thingy there's really no reason to open the kiln unless you want to rake the glass or something.
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DoodleLou
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« Reply #4 on: June 29, 2010 06:08:01 PM »

Ah yes.  Raking.  I forgot about that nifty little process....A little too advanced for me just yet...but I'm sure I'll want to give it a whirl sometime down the road.  Wink

Have you every tried raking?  Good results?  Any advice?

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« Reply #5 on: July 01, 2010 05:52:49 PM »

I'm too scared to rake! Maybe one day...
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babalina58
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« Reply #6 on: October 13, 2010 07:25:10 AM »

good site for this and that info... http://www.glass-fusing-made-easy.com/kiln.html
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