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Showing results for tags 'ball clay'.
Hi all, I'm based up in Finland and we have a lot of very clean local clay deposits. It's grey and fires to a dark red brown at the top end of it's range which I would guess is around 1100C looking at the glow. (the test we did was in a self built wood downdraft kiln without any cones or thermocouple. It started to boil and melt) There was a brick works on the site where I got the clay up until the '50's, so I know the clay is usable in some form or another. There is a LOT of clay around here, I guess as a result of glaciation? I dug a heap of clay about 15 years ago and it's been wrapped
Hi there, I'm new on this forum and quite new to ceramics and glazes in general so please excuse my lack of knowledge... I've been making ash glazes using this Katherine Pleydell-Bouverie nuka glaze recipe; Mixed woodash 33.0 Feldspar 33.0 Kaolin 16.5 Ball Clay 16.5 On a recent trip to China I aquired some rice straw ash and I was really excited to turn this into a glaze. From what I read rice straw ash should be very high in silica too like other (mixed) wood ashes so I used the same recipe. The results came out rather different then expected or other wood ash based
Hi all, I want to try a formula for a ^5 gold glaze (it says 1230-1260 C, I suppose that's still ^5 ?) called "Gold Pigment" out of an old Ceramic Review issue, and I'm not sure what are the US equivalents to the UK materials the formula calls for. The entire formula is: Manganese dioxide 43 Copper oxide 5 Cobalt oxide 5 Red clay 57 Ball clay 4 Quartz 5 So what red clay? Redart? Which of all the different ball clays we have in the US?? If I use Silica 325 is it the same as the quartz this formula has? Is flint also the same as quartz? Also, an