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Boro Room -- For Boro-related tips, techniques, and questions.

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  #1  
Old 2013-11-23, 4:10pm
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Bernhard Riegler
 
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Default Striking Amber Purples in the kiln

I am having problems with stiking AP's in the kiln. So far I have been flame striking only and got a nice variety of colours. Now I put them in the kiln and almost all the AP turned purple - gone are the yellows and reds. I got Brent Grabers DVD's and used his programming (ramp up to 1075 hold 11 hours, go to 960 hold 30 min and turn off). That did not work for me - all colours turned purple or murky. After some research I found a program that said: ramp to 1225 - hold 10 min - down to 1050 - hold 2 hours - ramp down 60 per hour to 960 and hold for 2 hours - then turn off. That did not work for me. Again the colours turned purple. What am I doing wrong??????? I would like to get those awesome colours I see in Brents work, but honestly, my work looks way better before I put it in the kiln. I have a Paragon SC-2.
Can someone please tell me what to do - this time I need help - desperately.
Also, I made some jelly fish with a double AP cap and they did not change/strike at all. All the encased work did not change colours.
What programing are you guys using to strike AP's nicely?
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Last edited by Onekura; 2013-11-23 at 4:15pm.
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  #2  
Old 2013-11-23, 4:33pm
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This is just my $0.02. Work the AP or DAP at temperatures where it turns clear, use lots of oxy. My strike cycle is at 1125 for 30 minutes.

This is what works for me.
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  #3  
Old 2013-11-23, 4:42pm
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I am working my AP's super hot with lots of oxy and I keep it super hot for a long time even after working it. All the haze is burned off and it turned clear. Then I let it cool until all the glow is gone and usually strike it in the flame. And it looks wonderful - lots of different colours. But when I put it in the kiln all the colours turn purple - no more yellow - no more reds and no more variations - everything is just purple . . . frustrating
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  #4  
Old 2013-11-23, 7:06pm
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Could it be your kiln itself? I've read somewhere that some kilns have reductive environments or some such.

What happens if you'd anneal as you would plain clear? No higher then 1050f?
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  #5  
Old 2013-11-23, 7:09pm
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Or maybe skip the flame striking on 3 samples, run one on kiln strike schedule 1 and the other sample on kiln strike schedule 2. And the last one or a regular anneal cycle at 1050F

Might all be worth a try to see what color effects might happen.
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  #6  
Old 2013-11-23, 7:13pm
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Only other things I could think of is to change up the schedules, run the first at temp for an hour instead of 11. Or just ramp up to temp for the other schedule with no hold and fo straight back to 1050
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  #7  
Old 2013-11-23, 7:18pm
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if I run it on a normal annealing (1050) nothing much changes. I was always under the impression, that you can get AP's more vibrant by kiln striking, thats what I was hoping for anyways. Never expected it to go all purple . .
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Old 2013-11-23, 7:22pm
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not hazy or dirty as in reduction - just purple (actually not a bad purple). But I want to keep my yellows and reds - just get more intense.
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  #9  
Old 2013-11-23, 7:35pm
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just a sample bead - left is befor the kiln - right is how it came out. Gone is the yellow
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Last edited by Onekura; 2013-12-13 at 6:46pm.
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  #10  
Old 2013-11-24, 12:18am
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I see what you mean, gorgeous both ways though! If you really want the yellow then just anneal and forego the kiln striking then maybe?
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Old 2013-11-24, 12:19am
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Not that I even know what colors I have, but I've never gotten a yellow like that out of any of the AP family shorts I have.. Wonder if its from how I'm working it, or my oxycon?
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  #12  
Old 2013-11-24, 12:56am
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it is easy to get the yellows, just AP thinly over white and don't strike it too much. Here are 2 examples of just AP over white and only flame striking
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Last edited by Onekura; 2013-12-13 at 6:46pm.
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  #13  
Old 2013-11-24, 3:52am
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You are getting good colors flame striking. I think I'd just aneal at 1050. You could try, a short strike cycle at 1075 or 1100 for 15 minutes and vary from there. I wish this was an exact science, bit it's not.
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Old 2013-11-24, 5:12pm
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Brent's 11 strike cycle is probably his "garage" segment, though I forget. Typically I set my controller for 1100 for 1 hour to strike A/P. The key is the background. You get the warm yellows, pinks and reds with a white background. Your results will vary & the thickness of the amber purple will affect how your colors strike. I suggest a base of regular A/P with DAP or other colors added as accents.
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  #15  
Old 2013-11-24, 5:14pm
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Or you can just flame-strike as suggested by others Both are very valid.
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  #16  
Old 2013-11-24, 10:09pm
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Bernhard I noticed your new avatar, is that a close up of some of your fume?
It looks like it, lovely.
I'm glad you keep your rat, he's just not your ratatar anymore.
sometimes when people change their avatar, I don't know who they
are anymore.
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  #17  
Old 2013-11-24, 10:29pm
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Yes, Mary it is a closeup of my fume. Hope it caused no confusion. I thought some colour might be nice
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  #18  
Old 2013-11-25, 7:15pm
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That is an awful high temp to strike att for the amber purples. I would go down to 1100 and then experiment by increasing the strike temp by 25 degrees until you find the sweet spot. It takes time, but once you get it dialed in then you will be able to reproduce your results. Good Luck!
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  #19  
Old 2013-11-25, 9:49pm
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Is that sample pendant(the purple one) encased in clear or is it just straight AP? Coating in clear can do wonders for color variations.
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  #20  
Old 2013-11-26, 9:38am
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That's a very long hold time for amber purple. I strike them at 1200 for 20 minutes.
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  #21  
Old 2013-11-26, 12:52pm
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Cosmo, do you bring them up to 1200 for 20 minutes and then back down to 1050 and hold for an hour to anneal?
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Old 2013-11-26, 1:19pm
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I just "rethunk" my first post and removed it because I was delirious - LOL -
The last time I annealed amber purple, I was having issues getting it to bring out purples - was staying amber and I read on here somewhere to ramp up to 1150 for approx. 15 - 20 minutes, then back down to 1050 for an hour. If I recall, I ended up doing that twice to get the deep colors I wanted, But I was going for more red/purple than yellow. here's what I ended up with - hard to see the amber on the edges because of the black background but there's quite a bit of it - fading into red, then purple and blue.

Last edited by nevadaglass; 2013-11-26 at 1:21pm.
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  #23  
Old 2013-11-26, 6:29pm
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nice to see Cosmo and e.mort in here - thank you for your advice. I have learned so much from you guys over the years - I am still an admirer.
Cosmo, you have been missed for a long time - just don't sell your torch - we want to see more of your work.
Nevadaglass, those flowers are stunning. Isn't it funny, you have problems getting the purples and I have problems getting way too much purple. Maybe it is a kiln thing. I am wondering if the temp reading of my kiln is out by a few degree. My next batch will be 1075 for an hour, down to 950 hold 2 hours. I'll keep you posted on the outcome
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  #24  
Old 2013-11-26, 8:59pm
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I used a paragon bluebird for the flowers
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Old 2013-11-26, 9:43pm
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Is it even possible to "strike" AP into yellows without it being layered over another color?
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  #26  
Old 2013-11-26, 10:28pm
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only ever got the yellows over white
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  #27  
Old 2013-11-27, 10:12pm
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Look how it came out of the kiln - I am getting closer. The colours are starting to come out good - still a little on the hot side. Next time I will drop my temp even more. But I am smiling
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Last edited by Onekura; 2013-12-13 at 6:46pm.
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  #28  
Old 2013-11-27, 11:14pm
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That heart with the glitter is beautiful.
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  #29  
Old 2013-11-28, 3:55am
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Thanks for the thread Bernhard. It seems there is possibly more than just heat involved with striking. Love the last batch from the kiln btw.
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  #30  
Old 2013-11-28, 8:46am
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I use the amber-purple family quite often and if I want a little more yellows and blues out of it I will keep my flame as neutral as possible, and work it hot, keeping it hot so as not allow it to cool enough to flame strike, then I'll put it in the kiln to anneal. If it is too amber I'll just leave it in the kiln for another normal cycle, which never goes above 1050, but generally holds 1050 for 45 min to an hour.
Just bringing it back down to room temp and back up to 1050 seems to give the APs a slight strike without washing it out completely in purple as you would bringing it up to 1150 or 1200 for a normal kiln strike in my experience.

Those last few came out beautiful.
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