Cracking elec kiln cover with wedge - ok or bad?
Posted 14 December 2012 - 10:43 PM
So, kiln people, do or don't?
Chris Seminara Ceramics
Posted 15 December 2012 - 02:23 AM
Are you referring to firing with the lid partially open or venting after firing. I usually wedge the lid open on my kiln (electric) after it has finished firing. But I give it a 12 hour cool down before doing that. I have been doing that for the past 20 years and haven't lost a load or partial load yet. I have two Duncan kilns and will even go so far as to open the bottom peep hole in addition to wedging the lid open. I am firing to a cone 6 and dont glaze. Dont think I would trust this process if I was glazing. To fast a cool down could ruin the load.
Posted 15 December 2012 - 02:27 AM
My lid has held up fine but I am very careful with it.
Posted 15 December 2012 - 03:36 AM
Professor Emerita Montana State University-Billings
Posted 15 December 2012 - 06:34 AM
You can prop the lid. I use a 1"square post, (-10" long, to distribute the stress.) You can also leave the peep holes open. TIP: hold a mirror above the peep hole- if it fogs, then there is still moisture in the ware.
Posted 15 December 2012 - 10:29 AM
Kiln Repair Tech
L&L Kilns Distributor
Owner, Neil Estrick Gallery, LLC
Posted 16 December 2012 - 09:19 PM
you get an A
Thanks Neil, Marcia, Mark, you understood my question about care of the hardware. sounds like I had an over cautious teacher. I do use the wedge that came with the kiln and use it carefully; just wanted to be sure.
Posted 17 December 2012 - 02:45 AM
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