Help KIln was set to hold for 35 hours instead of minutes
Posted 04 January 2012 - 08:28 AM
Just a suggestion.
Posted 04 January 2012 - 10:08 AM
Posted 04 January 2012 - 01:25 PM
Posted 04 January 2012 - 03:29 PM
Especially during cool down...my big beginner mistake was my impatience. By opening the kiln too soon my ware went through thermal shock, cracking body walls immediately and consequently
costing me a huge loss of time, and income. I sobbed my eyes out.
Posted 04 January 2012 - 04:33 PM
It could be considered a successful firing in a potentially disastrous situation.
Thank God. You only have a few wasters.
A better firing schedule maybe helpful for you, scheduling shut off before bedtime and allow cool off overnight. Set an alarm to alert you for shut off just in case you may have to do it manually. Whew!
Posted 06 January 2012 - 10:55 PM
There is a limit to the amount of images and size of that you can use on your messages. You are not so limited in the gallery. That it why it may be better to use the gallery to post images and refer to a link to see them.Also, it would be nice if people posted info about themselves with a picture of sorts on you page.
just thought I'd remind folks how this is set up.
Glad your fired work looks so good especially when you think of the alternate possibilities.
Posted 28 April 2012 - 09:41 PM
Posted 29 April 2012 - 09:50 AM
Greyfree, I'm so happy that you didn't have a complete disaster in the kiln! Don't take the hand slapping to heart, no matter how experienced and skilled someone is, we've all made mistakes in the process of
getting there. Keep working at it, don't give up, and I look forward to seeing more images of your work.
Posted 02 May 2012 - 12:48 PM
Just wanted to chime in that as a newer potter and old and now new kiln owner, I found that having a manual kiln taught me a LOT very quickly. For instance, my kiln sitter does not turn off, but my pottery was bisquing. I bought the witness cones and had to learn to look through the peepholes, as my idea of opening the top when on high was frowned upon here. When my pottery wasn't getting to Cone 6, the Cone 4 glazes almost took, so I knew there was a problem getting hot enough. I decided that rather than continue to fight with this kiln and pay the $700 it would take to fix it, I am using it for bisque only and bought a new computerized kiln.
My point is, though, that if I had bought a computerized kiln right away, I would have missed a lot of knowledge I got pretty quickly. I know that now with the computerized kiln, I am going to have to learn a lot again, but that is fine, because I love to learn. And I was also told that with the computer, I can set for special firings, etc., but I am glad I do have a basic understanding now of what happens in a kiln when I turn it on.
Northern Woods Pottery
Posted 02 May 2012 - 03:28 PM
Now I know what my daughter feels like when she called after making a mistake and I would fuss about why she should have known better. Wish I would have just held her hand and told her it would be OK no matter what......LOL.
Don't take the criticism badly. Sift through it and pick out the operational suggestions.
I am about to do my 4th glaze firing so we are in pretty much the same boat. I read and re-read the firing maual of my L&L. I first went over it and highlighted parts and always have it open when I fire. I added a hold time to my first firing and broke a casserole and ruined that shelf. I am now only doing the slow fire for glazes after a 3 hour preheat. I figured no bells and whistles till I know what I'm doing. Each firing is better than the last and even that disasterous first firing came out decently - except for one glaze. The best piece and most perfect outcome was one I was asked to make for a friend. Talk about beginner's luck. I was using new clay, new kiln and new glazes - too many variables but I had little choice since our studio where I take classes was flooded out in the fall and everything was lost. I do put witness cones in as the maual suggests and there's times when I can see them and times when I can't during firing. I check that I can before the kiln is turned on to be sure they are where I can see them. I use protective goggles to look in during the firing but the atmosphere is so heavy that I can't find the cones but there they are when it's cool and I open the kiln.
Since you are new to firing, just as I am, I strongly suggest that you sit with that manual and a highlighter and go over the "control" section again and all that goes before. It's a lot to absorb. One of my firings should have gone off at 11:00 pm and I stayed up till 3:30 a.m. before giving up and going to bed. Still not sure why it took so long but now start the firing as soon as I get out of bed on firing day. So, I learned from my mistake. You'll learn too. You can check your program segment when the kiln is firing and you can check the data before you start it. Just keep plugging away and take a deep breath the next time you fire and check everything more than once. I think each time I've started, canceled, read and started, canceled, read - just to be sure. When the firing is done, you'll see something like CPLT 12 hr 32 min. If you don't see that, you're still firing.
I don't want to tell you too much, in case I give you a bum steer. You don't need that. The manual is important; I can't stress that enough. Good luck. It would be interesting to see your pictures, for better or worse.
For those who are experienced, do you really weigh the pieces before you put them in the kiln? The manual has a sample log sheet and it asks for load weight. I haven't been doing that. I made up my own log that is more of a diary. I record what is going on each hour I check. I also read my electric meter before and after the firing, record that each time. It seems that the temperature doesn't always rise at the rate the manual said but the firing times are closer to the suggested time in the manual each time. I go in to class for a consult with the instructor after each firing. Our new kilns in the studio are L&L, as is her own, so that's a great help to me.
Posted 02 May 2012 - 03:33 PM
Pretty darned good results, considering. You lucked out. I didn't notice anything about the shelves but the pieces were great. I expected a mass of melted clay. So, you will never forget this firing, I bet. Good luck and happy firing.
Posted 02 May 2012 - 03:47 PM
Sorry about your mishap. But things happen. I do bet this will not happen again to you. I am also a nurse (besides a potter) and I had a nursing instructor tell me 36 years ago that if a nurse tells you they never made a medication error, they would be lying.
Same goes for firing a kiln. Anybody ever tell you they never messed up a firing, I would doubt their truthfulness.
Don't beat yourself up. I always fire my kiln at night and it turns out fine. So, good luck to you and enjoy while you learn!