Green Engobe going Grey under Clear Satin glaze
Posted 01 November 2012 - 03:10 PM
Posted 07 November 2012 - 01:58 PM
i am sending out the recipe i found that works to cover amoco velvet green #353 and allows it to remain green. it is from George Wettlaufer's 1976 book, "getting into pots" and he describes it as having a waxy surface. the original recipe called for a feldspar called C-6, a soda spar. when i was unable to find any information on this product (even in the materials list posted on Digitalfire) i called mr. wettlaufer and asked what he would suggest to replace it. his reply was Kona F-4.
WETTLAUFER GLAZE 18 CONE 6
soda spar (Kona F-4) 40
ball clay, (i use C&C) 20 (i work with white clay so i use the whitest ball clay i can get, C&C but OM4 would work, too)
silica 325 (flint) 15
add 2% bentonite
my notes after the first time i used it are VERY NICE SURFACE.
this covers colors nicely EXCEPT my mixed underglaze yellow which had floating chunks of yellow suspended above the clay and below the glaze which looked like someone threw yellow sand at a clear paint. unlike other glazes i have tested, this one does not "flatten" texture which is the most important quality for me. if you want to try it, test, test test.
Posted 10 November 2012 - 01:19 AM
have you been trying any of these glazes? i really wish i could send you a picture.
i was so pleased that 3 of the green underglazed pieces came out well enough to take to the empty bowl supper on friday. i approached one young man who had one of them and asked why he picked it out of the 400 bowls that were on offer. he said he liked the color. hooray! unfortunately, he dropped it on the driveway as he was leaving. we had some extra bowls and we gave him a green one from another potter so he at least had a green one.
Posted 11 November 2012 - 06:04 PM
Chris Seminara Ceramics
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