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#11
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#12
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next time add ash!
see ya steve Steve Mills wrote: In article .com, steve writes i don't have running water in my workshop - but a garden hose outside a ways. i use just water buckets. which works very well for throwing & minimal wash up. for glazing i rinse off at the garden hose (by the flowers, not the veggies). meanwhile i suspose a dedicated bucket for rinsing off glaze might accidently be creating a cool glaze? I tried that; it produced a rather unfortunate Brown! Steve Bath UK just a thought. see ya steve -- Steve Mills Bath UK |
#13
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What is ash going to do to the firing range and how much would you add? 5%
addition of ash seems to increase the fluxes by about 3% (decreasing the ratio of Si and Al). I would hate to waste the Cobalt but could you get a usable black... nahhh - could never bring myself to do that. wrote in message oups.com... next time add ash! see ya steve Steve Mills wrote: In article .com, steve writes i don't have running water in my workshop - but a garden hose outside a ways. i use just water buckets. which works very well for throwing & minimal wash up. for glazing i rinse off at the garden hose (by the flowers, not the veggies). meanwhile i suspose a dedicated bucket for rinsing off glaze might accidently be creating a cool glaze? I tried that; it produced a rather unfortunate Brown! Steve Bath UK just a thought. see ya steve -- Steve Mills Bath UK |
#14
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ash certainly runs like crazy at cone 10 or there-abouts, but my point
is it adds a texture or visual interest to the glaze. i've messed around with 100% ash on cone 10 pieces, making sure to not put much on for the lower portion of vases. inside bowls is great. eventually i just use 50-50 ash & porcelain & then add some colorants. i don't bother measuring, but will someday. in the begining i didn't bother washing the ash. after a while i "washed" the ash once i even heard of doing it. now i seem to just leave a bucket of ash outside for a long time & it gets rainwater & dries up so i guess it self cleans... mason stains are a cheap easy way to add color. and aside from the pottery suppliers mason stains can be bought thru cement manufacturing sites. i just figure a blah glaze might be saved with some ash - maybe even 50% ash with the blah glaze. see ya steve dkat wrote: What is ash going to do to the firing range and how much would you add? 5% addition of ash seems to increase the fluxes by about 3% (decreasing the ratio of Si and Al). I would hate to waste the Cobalt but could you get a usable black... nahhh - could never bring myself to do that. wrote in message oups.com... next time add ash! see ya steve Steve Mills wrote: In article .com, steve writes i don't have running water in my workshop - but a garden hose outside a ways. i use just water buckets. which works very well for throwing & minimal wash up. for glazing i rinse off at the garden hose (by the flowers, not the veggies). meanwhile i suspose a dedicated bucket for rinsing off glaze might accidently be creating a cool glaze? I tried that; it produced a rather unfortunate Brown! Steve Bath UK just a thought. see ya steve -- Steve Mills Bath UK |
#15
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wrote in message
oups.com... ash certainly runs like crazy at cone 10 or there-abouts, but my point is it adds a texture or visual interest to the glaze. i've messed around with 100% ash on cone 10 pieces, making sure to not put much on for the lower portion of vases. inside bowls is great. eventually i just use 50-50 ash & porcelain & then add some colorants. i don't bother measuring, but will someday. in the begining i didn't bother washing the ash. after a while i "washed" the ash once i even heard of doing it. now i seem to just leave a bucket of ash outside for a long time & it gets rainwater & dries up so i guess it self cleans... mason stains are a cheap easy way to add color. and aside from the pottery suppliers mason stains can be bought thru cement manufacturing sites. i just figure a blah glaze might be saved with some ash - maybe even 50% ash with the blah glaze. I know ash does beautiful things in a reduction cone 8 firing. I'm doing oxidation cone 6 so I was concerned with both the running and the effects you would get in that atmosphere and range. I suppose the safe way is to just do the inside of a bowl to see results... couldn't hurt and it certainly is nice to be able to not have to throw out anything that can be used. Have you ever heard of using charcoal ash? |
#16
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i've done combinations with fireplace wood ash & bar-b-q ash. i don't
know which component is responsible, but i got a marble stone affect. that *patchwork* of higher & lower tones within the same basic glaze. see ya steve DKat wrote: wrote in message oups.com... ash certainly runs like crazy at cone 10 or there-abouts, but my point is it adds a texture or visual interest to the glaze. i've messed around with 100% ash on cone 10 pieces, making sure to not put much on for the lower portion of vases. inside bowls is great. eventually i just use 50-50 ash & porcelain & then add some colorants. i don't bother measuring, but will someday. in the begining i didn't bother washing the ash. after a while i "washed" the ash once i even heard of doing it. now i seem to just leave a bucket of ash outside for a long time & it gets rainwater & dries up so i guess it self cleans... mason stains are a cheap easy way to add color. and aside from the pottery suppliers mason stains can be bought thru cement manufacturing sites. i just figure a blah glaze might be saved with some ash - maybe even 50% ash with the blah glaze. I know ash does beautiful things in a reduction cone 8 firing. I'm doing oxidation cone 6 so I was concerned with both the running and the effects you would get in that atmosphere and range. I suppose the safe way is to just do the inside of a bowl to see results... couldn't hurt and it certainly is nice to be able to not have to throw out anything that can be used. Have you ever heard of using charcoal ash? |
#17
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On Thu, 31 Mar 2005 21:16:28 -0500, "dkat" wrote:
What is ash going to do to the firing range and how much would you add? 5% addition of ash seems to increase the fluxes by about 3% (decreasing the ratio of Si and Al). I would hate to waste the Cobalt but could you get a usable black... nahhh - could never bring myself to do that. Lately I've been using native clay from my garden as a glaze. It's a nice warm chocolate/Albany/bean pot brown, but a little ash bleaches it out to light ochre. I say "bleaching" because that's really what it seems like. If I dip the piece in the plain slip and then brush on a thin streak of the slip+ash blend, the thin streak seems to turn the brown base lighter as opposed to covering it. Since I am starting with liquid slip from the garden clay, I can't report the exact weight percent of ash to (dry) clay, but I estimate around 25%. (Most recommendations say to start with 50-50 and go from there.) Best regards, Bob Masta dqatechATdaqartaDOTcom D A Q A R T A Data AcQuisition And Real-Time Analysis www.daqarta.com |
#18
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"Bob Masta" wrote in message ... On Thu, 31 Mar 2005 21:16:28 -0500, "dkat" wrote: What is ash going to do to the firing range and how much would you add? 5% addition of ash seems to increase the fluxes by about 3% (decreasing the ratio of Si and Al). I would hate to waste the Cobalt but could you get a usable black... nahhh - could never bring myself to do that. Lately I've been using native clay from my garden as a glaze. It's a nice warm chocolate/Albany/bean pot brown, but a little ash bleaches it out to light ochre. I say "bleaching" because that's really what it seems like. If I dip the piece in the plain slip and then brush on a thin streak of the slip+ash blend, the thin streak seems to turn the brown base lighter as opposed to covering it. Since I am starting with liquid slip from the garden clay, I can't report the exact weight percent of ash to (dry) clay, but I estimate around 25%. (Most recommendations say to start with 50-50 and go from there.) Best regards, Bob Masta dqatechATdaqartaDOTcom D A Q A R T A Data AcQuisition And Real-Time Analysis www.daqarta.com That sounds so lovely. I really do miss Albany slip and reduction firing at times. I think Long Island is one big sandbar. I have yet to find clay in my digging... I wonder how my S.O. would feel about bringing back dug clay from our trips if I swore off loading the car with rocks? |
#19
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On Sat, 2 Apr 2005 12:39:55 -0500, "dkat" wrote:
That sounds so lovely. I really do miss Albany slip and reduction firing at times. I think Long Island is one big sandbar. I have yet to find clay in my digging... I wonder how my S.O. would feel about bringing back dug clay from our trips if I swore off loading the car with rocks? I'm not doing reduction, just typical ^6 oxidation. I originally thought to use the clay for handbuilding. It was full of lime bits that needed to be sieved out, so it was very time consuming. But when used as a glaze, those hours of effort last a lot longer than when used as a body clay... ;-) I think the idea of bring back clay from trips is excellent. You could make your own souvenir pots, glazed with the actual place you visited! You'll need to get enough to allow some test runs, and I suppose you might need to be prepared to add some fluxes to get the clay to melt. (I just got lucky with mine.) In fact, I've been thinking about making glazes using the marl from the lake at my wife's family cottage to replace whiting. I'm thinking this may be a way to make family gifts with sentimental value. Probably a lot of local materials could be worked into glazes like this. Just a thought. Best regards, Bob Masta dqatechATdaqartaDOTcom D A Q A R T A Data AcQuisition And Real-Time Analysis www.daqarta.com |
#20
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"Bob Masta" wrote in message ... On Sat, 2 Apr 2005 12:39:55 -0500, "dkat" wrote: That sounds so lovely. I really do miss Albany slip and reduction firing at times. I think Long Island is one big sandbar. I have yet to find clay in my digging... I wonder how my S.O. would feel about bringing back dug clay from our trips if I swore off loading the car with rocks? I'm not doing reduction, just typical ^6 oxidation. I originally thought to use the clay for handbuilding. It was full of lime bits that needed to be sieved out, so it was very time consuming. But when used as a glaze, those hours of effort last a lot longer than when used as a body clay... ;-) I think the idea of bring back clay from trips is excellent. You could make your own souvenir pots, glazed with the actual place you visited! You'll need to get enough to allow some test runs, and I suppose you might need to be prepared to add some fluxes to get the clay to melt. (I just got lucky with mine.) In fact, I've been thinking about making glazes using the marl from the lake at my wife's family cottage to replace whiting. I'm thinking this may be a way to make family gifts with sentimental value. Probably a lot of local materials could be worked into glazes like this. Just a thought. Best regards, Bob Masta dqatechATdaqartaDOTcom D A Q A R T A Data AcQuisition And Real-Time Analysis www.daqarta.com Well this is certainly inspiring. What I love about pottery is all of the dimensions and the potentials for adventure. If you ever get bored with one aspect there is always another to delve into. Thanks for sharing! |
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