colorfool on sat 18 sep 99
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=3E Date: Friday, September 17, 1999 18:16:41
=3E From: colorfool
=3E To: clayart
=3E Subject: Re: Harding Black's Blue
=3E
=3E While perusing the archives recently (reading all the majolica =
threads=21) I
=3E think I ran across someone pining for a Harding Black Glaze??? A friend
=3E shared his notes from a Harding Black workshop or lecture in 1993, they
=3E included a Cone 5 glaze variation - HB Blue.
=3E
=3E Glaze - E396 -Clear =5E5 Elect.
=3E
=3E G200 Potash Feldspar 30.50
=3E Silica 31.00
=3E Whiting 13.50
=3E Kt. Ball Clay 13.50
=3E Zinc Oxide 2.00
=3E Soda Bicarb 2.50
=3E Barium Carb 6.00
=3E Colemanite 15.00
=3E
=3E
=3E E946 Add Copper Oxide 5.00 Turquoise
=3E
=3E E948 =22 =22 =22 12.00 Green-black metallic =
blush
=3E
=3E E949 =22 =22 =22 15.00 Green-black Metallic
=3E
=3E HB Blue Glaze - Substitute Borax for colemanite - must ball mill - use =
2=25 CuO
=3E
=3E E839 - White for overpainting 10=25 Zircopax
=3E
=3E
=3E Base Clay - 3 Cedar Heights Redart, 1 Ocmulgee Red Brick Clay
=3E
=3E
=3E
=3E I've never fired this glaze so I don't know anything about it except =
that it's
=3E beautiful and I treasure the one piece of Harding Black's work I have =
which I
=3E believe has this glaze on it, a little pitcher dated 1973.
=3E
=3E He did mention when speaking in San Angelo a few years ago that he used =
to
=3E take buckets out to D'Hanis Texas and buy clay at the Brick and Tile
=3E Factory........this might be the Ocmulgee Red Brick Clay ( which =
probably
=3E originates in Georgia.....the area around the Ocmulgee River being the
=3E ancestral stomping grounds of the Studstill Family).
=3E
=3E Good Luck and have fun with it. Pam Studstill, in Texas where the =
morning air
=3E is mild and fragrant with exhaust and a touch of autumn.
=3E
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