Love it... "Younger and never slept"...💕 I'm an infant in clay/pottery...but find this fascinating...beautiful. Shawn seems to be an awesome teacher as well.
Brett Webster Raku is never food safe due the high amounts of metal oxides used such as copper. Also, the work is too porous and will promote bacteria in the ware. No, you cannot re-fire with clear glaze as it will completely change the color and will still not be food safe. Strictly decorative ware.
People who do this in an electric kiln should be sure the power is turned OFF before using tongs to grab the hot pot. Metallic tongs can conduct lethal current from the coils through your body to ground.
Nice show. I have done many alcohol reduction.You better start freezing with water the lightest colors : yellow, and blue. I 'm using 70 % or 99 % alcohol, both work. I fire to 1750 and then go back to 1400 F , before removing.This way the pieces are already less hot and it takes less time to cool in the chamber. If there is too much copper, I torch them or refire for couple of hours at 250 F.
This is a matte glaze so it will never be shining but turn brown with time. You have to use glaze recipe with silica to have some shiny. My shiny glazes have around 30 % of SIO2.
I don't understand why multiple alcohol sprayings would be better than a single spraying. All the alcohol does is supply a momentary evaporating film of carbon atoms which bond with and carry off oxygen atoms from the copper oxide, leaving a shiny metallic oxygen-free surface. However, as soon as the air hits this shiny surface, oxygen re-combines with it, it flashes colors, and then returns to the starting surface of oxidized black. Why repeat the spraying process? Why not immediately put the shiny metallic surface (from the first spraying) under the glass bowl, and then control the partial re-oxidization of the flashing process? As far as I can see, the only thing that happens when you spray more than once is the surface of the pot is cooled slightly. Nothing is "built up" because it's just oxygen atoms being pulled off and then rejoining the surface.
Great to see this process as I'm getting ready to try it myself. Can anyone give me an idea as to how much total time to give the piece once its in the reduction process?
it really depends on the size and thickness of the piece.. the piece in the video was probably in the chamber a total of 15- 20 minutes but I also rushed it a bit by blowing air into it. It is better to leave it in longer to cool or until the color is the way you like it :)
the recipe was mentioned in the video - it is not a glaze but technically a wash with multiple colorants.. Cobalt, copper, red iron, and black copper with frit 3110.
It is not water tight and will slowly leak. It also has some heavy metal colorants that are not trapped inside a high temp glaze matrix so the chems may leach
Hey, spend the money and use something like Everclear from the liquor store (unless you have moonshine making pals). 30 yrs ago after my first raku experiment with rubbing alcohol I didn't like the idea of breathing in the fumes. Next time I wanted to try the liquid combustible I bought the cheapest high proof liquor they had and used it. Hey. you don't have to use that much, and your lungs will thank you.
Love it... "Younger and never slept"...💕
I'm an infant in clay/pottery...but find this fascinating...beautiful. Shawn seems to be an awesome teacher as well.
This is super cool- I’ve had less than optimal results with regular raku glazes. I’m hoping my college instructor might let me try this instead!
Hola,estaba previamente esmaltada la pieza?Con qué pigmentos?
Awesome work! Could you then reglaze with a clear to make the piece functional ie. food safe or would it wreck it?
Brett Webster Raku is never food safe due the high amounts of metal oxides used such as copper. Also, the work is too porous and will promote bacteria in the ware. No, you cannot re-fire with clear glaze as it will completely change the color and will still not be food safe. Strictly decorative ware.
Awesome thanks for the new Raku tips
People who do this in an electric kiln should be sure the power is turned OFF before using tongs to grab the hot pot. Metallic tongs can conduct lethal current from the coils through your body to ground.
Thanks for sharing that, I have the book and it was great to see it done.
Really beautiful. Thanks for sharing that.. I have that book but didn't understand the whole technique. I'm good now with it. Thanks again..
Should the pot be covered with icing or not necessarily?
How would you make that copper wash? At first I was just going to use a copper based glaze, but I don't know if that will do anything.
Nice show.
I have done many alcohol reduction.You better start freezing with water the lightest colors : yellow, and blue.
I 'm using 70 % or 99 % alcohol, both work.
I fire to 1750 and then go back to 1400 F , before removing.This way the pieces are already less hot and it takes less time to cool in the chamber.
If there is too much copper, I torch them or refire for couple of hours at 250 F.
so what you think is the best way to get more shining collors?
This is a matte glaze so it will never be shining but turn brown with time. You have to use glaze recipe with silica to have some shiny. My shiny glazes have around 30 % of SIO2.
Everclear and raku could be a fun day lol
Do you know if you can fire using a glaze such as a copper penny and then add horse hair on top?
I don't understand why multiple alcohol sprayings would be better than a single spraying. All the alcohol does is supply a momentary evaporating film of carbon atoms which bond with and carry off oxygen atoms from the copper oxide, leaving a shiny metallic oxygen-free surface. However, as soon as the air hits this shiny surface, oxygen re-combines with it, it flashes colors, and then returns to the starting surface of oxidized black. Why repeat the spraying process? Why not immediately put the shiny metallic surface (from the first spraying) under the glass bowl, and then control the partial re-oxidization of the flashing process? As far as I can see, the only thing that happens when you spray more than once is the surface of the pot is cooled slightly. Nothing is "built up" because it's just oxygen atoms being pulled off and then rejoining the surface.
Great to see this process as I'm getting ready to try it myself. Can anyone give me an idea as to how much total time to give the piece once its in the reduction process?
it really depends on the size and thickness of the piece.. the piece in the video was probably in the chamber a total of 15- 20 minutes but I also rushed it a bit by blowing air into it. It is better to leave it in longer to cool or until the color is the way you like it :)
Hi Shawn, just for the purpose of the videos being complete, could you repeat the questions, before you answer them?
What glaze was used on this pot?
the recipe was mentioned in the video - it is not a glaze but technically a wash with multiple colorants.. Cobalt, copper, red iron, and black copper with frit 3110.
Thank You ♡
Achei lindo o seu trabalho....
Parabéns.! 10
Great video :) I wonder how my crystalline glazes would react on alcohol spraying ;)
not sure it would work but only one way to find out - :)
i want ru learn me this hoby
I want to date you
that was awesome !!!!!!!!!!!!!!!!!
thank you
Why can't you drink from it?
It is not water tight and will slowly leak. It also has some heavy metal colorants that are not trapped inside a high temp glaze matrix so the chems may leach
even the humidity of that day will affect a glaze
joan linacre روعه
I need a private lesson from him, on the potters wheel...
could be arranged
Kinda like the scene in the movie "Ghosts?....
If you don't like the outcome, it seems you could just re-fire the pot...
th-cam.com/video/juFHcWfhdA4/w-d-xo.html love the color of hers, she has an exact recipe for the pinks, reds,etc
Hey, spend the money and use something like Everclear from the liquor store (unless you have moonshine making pals). 30 yrs ago after my first raku experiment with rubbing alcohol I didn't like the idea of breathing in the fumes. Next time I wanted to try the liquid combustible I bought the cheapest high proof liquor they had and used it. Hey. you don't have to use that much, and your lungs will thank you.
Одни разговоры, ничего полезного, только демонстрация бороды..
Boy you love to talk.
I really do
Loved the result though
Hahahaha sure does sheeeesh