Sorry for the late reply, I don't always get notifications for some reason. As mentioned in video. I use a venturi burner with a regualator and it has to be open all the way to reach final temp of 1000-1150.Celcius. No I don't have trouble as its very well insulated too. I actually have the opposite problems and it gets hot very fast!
I wish someone would It’s the length of time to get to certain temperatures. I know every kiln is different but how long should it take to get to ideal temp ?
You just answered your own question.. every kiln is different. I've seen channels where they are heating kiln for hours using crappy weed torch and it never reaches a high enough temp. I can only answer for my well insulated kiln and using a proper forge level torch. I can heat it to 1000.C in 10min however I aim for a slower temp increase of around 30min to prevent thermal shock. My kiln could probably reach temperatures of 1200 if I pushed it longer but I never need to go above 1100 for the type of clay and glazes that I use.
Hi! I would love to ask some questions to you. I wonder if I can make a kiln with the tank in parallel ? Because I want to make glass painting art. And round shape doesn’t give me much space. So I wonder if I can make it side way ? Does it give the same effort? thank you
No I don't think it would work as the gas kiln needs a vortex (like a hot tornado) to spread evenly throughout the chamber. This would not happen with a parallel barrel. You would be better off buying an electric kiln for glass art, they come in parallel designs.
Sorry for the late reply, I don't always get notifications. I am using a ceramic fibre board designed for foundry kiln temperatures. I don't know the max temp. I only go up to 1150.c in this kiln but the board itself could probably withstand up to 1300.c with no issues. Try a kiln repair shop or a metal foundry supplier?
I personally find it too difficult to bisque fire in my homemade gas raku kiln as its hard to create slow and long temperatures needed for a bisque firing. I'm not saying it's impossible but I prefer to use my electric kiln for bisque. I only use my raku gas kiln for fast glaze firing as that is what I designed it for.
I normally take the pieces out while still hot and put in a tin reduction chamber. You could absolutely do soda firing in a Raku kiln but I read that the chemicals released during fire eventually damage the kiln insulation. So provided you're using a kiln that you don't mind getting a bit roughed up and replacing the insulation more often. I have insulated foam panels over a thin lining ceramic fibre blanket in this kiln which helps it get super hot very quickly :)
It looks like you are getting quite a bit of carbon build up during firing. I'd pull the burner out more so that more oxygen is pulled in given you full combustion of the gas.
@@benpatterson4452 thanks for the tip, this just was a "tester" burn while getting to know my kiln. I know about blue flame vs orange and pulling back the burner ;)
@@karenwildeart I had to tinker with mine a bit to get things right. Another thing I had to to was widen the inlet and outlet to get to a higher temp. Initially it kept stalling.
@@benpatterson4452 I don't have trouble with the venturi burner, that thing is a beast! Gets my kiln up to temp in 10min flat (I actually have to be careful about not heating the kiln up too quickly). Highly recommend a venturi ;) It could also be that I lined my kiln with both a layer of soft ceramic wool and then foam bricks over top so it's very well insulated.
The short answer is no. This style of kiln is designed for fast firing to low earthenware temperatures and will not fully vitrify a clay so that's its waterproof. You could use food safe glaze to make bowls for dry foods but anything that holds liquids will most likely "sweat" through the clay and leak. Raku 'functional' pottery is usually fired at much higher stoneware and porcelain temperatures (around cone 6-10).
@@j_kwanna5545 sorry, I dont understand your question. Yes there are food safe glaze available. No, using a food safe glaze will not make it waterproof. You need to vitrify clay through higher heat. I would suggest doing your own research around clay and firing temperatures before deciding what you want to make.
@@karenwildeart oh what i mean Away from the method of firing , whether with an electric or gas kiln, does the glazing material make the mugs safe for food without problems?
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I find my kiln is slow to get 1900-2000f …I was wondering if the last couple hundred degrees just took longer to reach?
Sorry for the late reply, I don't always get notifications for some reason. As mentioned in video. I use a venturi burner with a regualator and it has to be open all the way to reach final temp of 1000-1150.Celcius. No I don't have trouble as its very well insulated too. I actually have the opposite problems and it gets hot very fast!
I wish someone would
It’s the length of time to get to certain temperatures. I know every kiln is different but how long should it take to get to ideal temp ?
You just answered your own question.. every kiln is different. I've seen channels where they are heating kiln for hours using crappy weed torch and it never reaches a high enough temp. I can only answer for my well insulated kiln and using a proper forge level torch. I can heat it to 1000.C in 10min however I aim for a slower temp increase of around 30min to prevent thermal shock. My kiln could probably reach temperatures of 1200 if I pushed it longer but I never need to go above 1100 for the type of clay and glazes that I use.
Hi! I would love to ask some questions to you. I wonder if I can make a kiln with the tank in parallel ? Because I want to make glass painting art. And round shape doesn’t give me much space. So I wonder if I can make it side way ? Does it give the same effort? thank you
No I don't think it would work as the gas kiln needs a vortex (like a hot tornado) to spread evenly throughout the chamber. This would not happen with a parallel barrel. You would be better off buying an electric kiln for glass art, they come in parallel designs.
I make glass firing kilns with two used electric kilns on their sides. Worked great !!
Can you tell me what you are using for the lid and what the temp rating is? I am living in France and would like to try and find it here.
Sorry for the late reply, I don't always get notifications. I am using a ceramic fibre board designed for foundry kiln temperatures. I don't know the max temp. I only go up to 1150.c in this kiln but the board itself could probably withstand up to 1300.c with no issues. Try a kiln repair shop or a metal foundry supplier?
Hello ! It seems to works good ! What's this white material ? Calcium silicate or cellular concrete?...
Do you mean the drum lining? It's made of ceramic fibre board and then another layer of ceramic blanket. Yes the insulation works well :)
I am new to Ceramics. Could I use a Raku Kiln for bisque and Glaze firing? The ceramics I want to create are low fire ceramics
I personally find it too difficult to bisque fire in my homemade gas raku kiln as its hard to create slow and long temperatures needed for a bisque firing. I'm not saying it's impossible but I prefer to use my electric kiln for bisque. I only use my raku gas kiln for fast glaze firing as that is what I designed it for.
Would covering the flue create a reduction atmosphere? Can you do soda ash in something like this? Thanks
I normally take the pieces out while still hot and put in a tin reduction chamber. You could absolutely do soda firing in a Raku kiln but I read that the chemicals released during fire eventually damage the kiln insulation. So provided you're using a kiln that you don't mind getting a bit roughed up and replacing the insulation more often. I have insulated foam panels over a thin lining ceramic fibre blanket in this kiln which helps it get super hot very quickly :)
It looks like you are getting quite a bit of carbon build up during firing. I'd pull the burner out more so that more oxygen is pulled in given you full combustion of the gas.
@@benpatterson4452 thanks for the tip, this just was a "tester" burn while getting to know my kiln. I know about blue flame vs orange and pulling back the burner ;)
@@karenwildeart I had to tinker with mine a bit to get things right. Another thing I had to to was widen the inlet and outlet to get to a higher temp. Initially it kept stalling.
@@benpatterson4452 I don't have trouble with the venturi burner, that thing is a beast! Gets my kiln up to temp in 10min flat (I actually have to be careful about not heating the kiln up too quickly). Highly recommend a venturi ;) It could also be that I lined my kiln with both a layer of soft ceramic wool and then foam bricks over top so it's very well insulated.
Is it safe food firing for mugs ?
The short answer is no.
This style of kiln is designed for fast firing to low earthenware temperatures and will not fully vitrify a clay so that's its waterproof. You could use food safe glaze to make bowls for dry foods but anything that holds liquids will most likely "sweat" through the clay and leak.
Raku 'functional' pottery is usually fired at much higher stoneware and porcelain temperatures (around cone 6-10).
@@karenwildeart then, if i use glaze leadless and firing in this kiln thats will work or not ?
@@j_kwanna5545 sorry, I dont understand your question. Yes there are food safe glaze available. No, using a food safe glaze will not make it waterproof. You need to vitrify clay through higher heat. I would suggest doing your own research around clay and firing temperatures before deciding what you want to make.
@@karenwildeart oh what i mean Away from the method of firing , whether with an electric or gas kiln, does the glazing material make the mugs safe for food without problems?
karenwilde.art/2022/08/28/is-raku-pottery-food-safe-the-short-answer-is-always-no/