New Kiln

@sorce just thinking about the fire. Is it possible that I did not give the pots on the bottom enough space between top of pots to bottom of shelf above?
 
Nice job, really like the blue glaze (no surprise there) and the blue with the rootbeer is great. Looks like you have a promising new career in your retirement.
 
Very nice pieces. It looks like they have a little bloat. Is the clay you are using ok to go to cone 6? When I use cone 5 clay these are some of the results I get. I usually bisque fire for about 16 hours when I Bisque. I know it sounds very slow but in my experience this is when I get the best results from my clay. Going slow allows the clay to go through the stages thoroughly. over all looks very good. If you have questions send me a PM if you want.
 
You mean cone 04 bisque? Hate to do that to ya...but.
Nice for the washed shelves!... Conepacks!
It's worth figuring out that controller, it's quite the tool! It's everything! The whole gift! No one cares about a well insulated box! Shiny or not! Lol!
AZbonsai said:
Is it possible that I did not give the pots on the bottom enough space between top of pots to bottom of shelf above?
Click to expand...

You'll notice pack density change temps in various ways. That shelf so close can hold a lot of heat, but wasting space in the kiln is never the right fix! (Program!) Too close woes are more, sagging shelves, and pieces warping in the fire, then sticking to the shelf above. Had that happen my first firing!
Do keep your first shelf on half inch posts at least.

Amen to slow! Slow like Bonsai!

Sorce
 
Kyleboldy2003 said:
Very nice pieces. It looks like they have a little bloat. Is the clay you are using ok to go to cone 6? When I use cone 5 clay these are some of the results I get. I usually bisque fire for about 16 hours when I Bisque. I know it sounds very slow but in my experience this is when I get the best results from my clay. Going slow allows the clay to go through the stages thoroughly. over all looks very good. If you have questions send me a PM if you want.
Click to expand...
Thank you very much I appreciate it! I was told clay is cone 6. Do you bisque at cone 6 as well?
 
Cone 4? Lol! How come?

I'm going to try to make you single fire! Hehehehe!

Sorce
 
I read somewhere you bisque fire at lower temp than glaze fire and I thought that would work?

sorce said:
Cone 4? Lol! How come?
Click to expand...

I have another load of cone 6 clay bisque ware to fire. Any suggestions on cone and time?

Another example of the Bnut community giving up their time and talent to help a fellow Nutter! I appreciate you all!
 
Kyleboldy2003 said:
No I bisque cone 04 . That is what I suggest you try that. That also could be a big issue for you. I’d fire slower and fire bisque cone 04 for 12-16 hours.
Click to expand...
Thanks. Just sent you a PM you already answered my question. Thanks.
 
AZbonsai said:
I read somewhere you bisque fire at lower temp than glaze fire and I thought that would work?



I have another load of cone 6 clay bisque ware to fire. Any suggestions on cone and time?

Another example of the Bnut community giving up their time and talent to help a fellow Nutter! I appreciate you all!
Click to expand...
Did you have problems getting the glaze on? The clay has much less ability to absorb water from the glaze chemistry when it’s been bisqued so high.
 
I'd get these shelves in your size. https://www.sheffield-pottery.com/Semi-Hollow-CoreLite-Kiln-Shelves-s/427.htm

How many programs can you program? I'm looking at the controller options now...what did you get!? I'm so excited for you!

If you weigh for dry, in your humidity, I doubt you'll ever need a candling, aka "waterschmoking", aka anti explosion time under 200F, but it wouldn't hurt to have a number of hours under 200F.

After that I'd ramp it to 1450F fast (420/hr) and hold for an hour. Then fast to 1650F and hold for an hour, then 540/hr till 2008F, which is when you should watch the 04 cones to shut it down. I'm assuming you'll use small cones since they are the easiest to see in electric peeps. The chart says, if you go 540/hr for the last couple hundred degrees, 2008F is small cone 04. Watch them fall till you figure out how long to program that last leg, or what temp it actually needs to read to fell a 04.
That's actually like a 8 hour firing, so you could slow the ramps and extend the holds, but that is an efficient use of energy. Being where you need to be to burn out organics, not wasting time getting there.

The bloating of that Manganese body though, isn't an organics burn out issue. Manganese begins to melt Right around cone 6, I believe it fluxes other things at that point and vice versa, which causes the bloating reaction. So that slow ramp to cone 6 will be necessary no matter the bisque schedule. Like you can turn the heat down on a pot of water and keep it simmering at the boiling point, or jack the heat and have large bubbles.

conechart.jpg

Sorce
 
What is the name of that black clay? Usually black clays like that are over-loaded with manganese to give that dark color. The problem is it outgases so you will always be at risk of bloating
 
ABCarve said:
Did you have problems getting the glaze on? The clay has much less ability to absorb water from the glaze chemistry when it’s been bisqued so high.
Click to expand...
No....not at all. It was still porus.
 
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