Unloading the NEW GAS KILN - the 2nd FIRING!
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Unsupported stilts is hard on those shelves. Three stilts per shelf, line them up vertically.
I would recommend you pack the ware as close together as possible. Keep similar height pieces on the same shelf. The less open space at the bottom the less likely the flame/heat will take the shortest path.
Use as little gas as possible as you approach the end of your firing to keep the kiln in reduction and slowly climbing. This will allow the temperature to balance out in the kiln. Speed at the end is not your friend.
I was surprised too. Stilts that are not lined up is just a super bad idea.
I would say to place two deflecting bricks to direct the flame upward. A short firing doesn't usually give the top and bottom enough time to even themselves out. The gas kiln we fire is 14 hours. It's bigger, but 7 seems to short of time. Also pay close attention to the exit space in the chimney. The article "Firing The Gas Kiln - What I've Learned So Far" Jon Rawlings Pottery, is THE BEST article I have ever read on understanding the firing of a gas kiln.
The birds in the background agree too. Whistling at how cool your pots are.
Much like others have mentioned the 3 main ways I would look to create balance in a kiln like this is with a bag wall, target bricks, or slower and a more heavily reduced firing. Sounds like you have all the right people around you to get you on your way. The work looks great and I'm definitely looking forward to seeing the journey with this kiln. I'd personally just start with a target brick on either side of the stack at about halfway between the burner ports and the front wall. If that doesn't turn out to be enough in addition to the slower firing with a more closed damper, then I'd explore the bag wall idea.
Love your videos. Love that you are learning with a gas kiln. I am about to take my first raku firing at the art place where classes.i love ginormous mugs too!
It looks like there isn’t a bag wall to direct the flame, perhaps one in front of the entry ports would help direct the flame upwards? My husband and I built a large gas kiln (probably about 35 years ago) and the flame came in at the sides at the bottom. There was a bag wall directly in front of them and that directed the flame. Your pots look fantastic!
Nice results 🔥
It looks like the burner port is coming in from the back corners horizontal to the kiln floor. You could try to set up a vertical barrier between the bottom shelf and the flame path , something like an 8" wide very high fire shelf, to better direct the flame forwards at a target brick and let the down draft heat the pots. Beautiful work BTW.
Wood ash with just cobalt carbonate on a white clay boy is worth a try.
Hi Jon ! Love your videos! I am a hobby potter, and am curious about a direct comparison from a glaze combo done in an electric firing compared to gas. Could you do some combo test tiles to show the difference in atmosphere only? You are so familiar with all your glaze combos and I would guess that most are not. I like the renewed boost in your videos now that you have Kai. Thank you!
Love this kiln unloading! 😊
Gorgeous,gorgeous! Loving the ash!
The pink and teal is soo pretty
When you say you are using wood ash glaze, are you being specific about the type of wood that was burned? My Mom was a potter back in the 70's, and we always had to burn only one type of wood in the fireplace at a time, so she could test it. I believe she liked the looks of birch and oak ash glazes.
Mayco should pay you more. I’m loving the combos.
The harder the reduction the slower the temperature rise. So heavy reduction for the last few cones should even it out and slow the rise. If it stalls out goose the air flow more. Are you using welders goggles to view the cone packs?
Excellent
- "How many of these do you want to buy?"
- "Yes."
What is your fire schedule?, No reduction at all ?. Regarding even temperatures, As suggested below, it's all about circulating the air effectively. try to direct the flame or deflect the flame up towards the top of the kiln.
I have a updraft Olsen kiln… The top fires hotter, but its easy for me to even it out with the damper…
For all of you out there with electric kilns, wanting to experiment with ash glazes - you do not need a gas kiln or reduction atmosphere to do that. Ash glazes work fine in electric kilns too, you just get different variations in colors & effects. :) As long as your kiln fires up to 1260-1280C you're good to go!
Bring back the orange glaze especially for Halloween.
Loving the toasty color results and the ash rivulets in your combos. I'm refurbishing an old gas kiln and want to explore some of my own reduction firing someday.
Sorry if I missed the answer to this newbie potter question - Are these pots all made with ^10 clay bodies and glazes or are these the same combos you've been doing with ^5/6 electric? I understand that some glazes can be both ^5/6 & ^10 compatible, but how are ^5/6 clay bodies affected by the higher temps? Is over-vitrification a thing?
What do you do about leaching of the oxides in the glaze? I'm new to pottery and just learning about glazes and food safety of the glazes
Hey John, I inherited an old 23 cubic foot gas kiln that I attached to the Natural gas from our house and I am looking into having g a brick chimney built for it. Do have any references/ resources you can refer me to for the building of a brick chimney?
😍👏👏
Pin me please Jon? I’m first lol 😅
I love the glaze on the mug at 7:57