Db Garner on thu 25 mar 04
Over 20 years ago I started using an engobe recipe by Daniel Rhodes
Flint 20
Kaolin 25
Ball Clay 25 (#10 Tenn. ball)
feldspar 20
Borax 5
Zircopax 5 (added only for lighter colors)
plus colorants
about 15 years ago I had some problems with it crawling at cone 6
After trying numerous things we settled on the following
EPK 26
#10 Tenn Ball 32
Neph Sy 16
flint 26
plus colorants
It's applied while the clay is wet , sometimes still on the wheel.
Recently this started to peel up from the clay in the bisque fire. It seems
especially bad where thick and thicker is better for some colors.
Any ideas ?
Thanks, D <><
Ron Roy on fri 26 mar 04
Deflocc it with Darvan 7 for starters - then start replacing the EPK with
calcined kaolin if the problem persists.
RR
>Over 20 years ago I started using an engobe recipe by Daniel Rhodes
>
>Flint 20
>Kaolin 25
>Ball Clay 25 (#10 Tenn. ball)
>feldspar 20
>Borax 5
>Zircopax 5 (added only for lighter colors)
>plus colorants
>
>about 15 years ago I had some problems with it crawling at cone 6
>After trying numerous things we settled on the following
>
>EPK 26
>#10 Tenn Ball 32
>Neph Sy 16
>flint 26
>plus colorants
>
>It's applied while the clay is wet , sometimes still on the wheel.
>Recently this started to peel up from the clay in the bisque fire. It seems
>especially bad where thick and thicker is better for some colors.
>
>Any ideas ?
>
>Thanks, D <><
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
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