Greg Lamont on mon 5 oct 98
At 05:05 PM 10/4/98 -0400, you wrote:
>Greg,
>
>Please do consider posting the other 4 variations, with your comments. If
>not, I'd appreciate a private email. Thanks.
>
>Bonnie Hellman in Pittsburgh, PA
>>
>>Hi all you Floating Blue lovers out there,
>>
>>A while back, I received 5 variations on the original Floating Blue recipe
>>from Ron Roy (thanks again, Ron!) that seek to reduce or eliminate the
>>gerstley borate--the most likely offender in this recipe. I've tested the
>>ones that utilize Frit 3134 in place of all or part of the Gerstley
>>borate--as I had that on hand--find that one of them works especially well:
>>
>>Ron Roy's Floating Blue #1 (cone 5-6 oxidation)
>>41 Nepheline syenite
>>17 Gerstley borate
>>13 Frit 3134
>>18 Flint
>>11 EPK
>>
>>2 Red iron oxide
>>1.5 Cobalt carbonate
>>4 Rutile (milled)
>>
>>If anyone is interested in seeing the other 4 variations. E-mail me
>>privately. If I get enough requests, I'll post them to the list.
>>
Bonnie, et al,
FIrst, let me say that, in checking my database, I found there are 6 Ron
Roy variations, not 5 as previously reported. I have not tested the ones
that use Frit 3278, as this frit appears not to be available from any of
the suppliers here in the upper midwest. Version 1 gave me the best color
response of the bunch, but I'm going to re-test the Frit 3134 varieties as
I think I might have slightly overfired the first batch. I hope to test
the others when I can obtain some frit 3278. Here then are the recipes
number 2-6:
----------------------------------------------------------------------------
-------------------------------------------
Ron Roy's Floating Blue Rev.2
-----------------------------
35.5 Nepheline syenite
8.5 Gerstley borate
24.5 Frit 3134
16 Flint 16
15.5 EPK
--------
100
2 Red iron oxide
1.5 Cobalt carbonate
4 Rutile
----------------------------------------------------------------------------
------------------------------------------------
Ron Roy's Floating Blue Rev. 3
-----------------------------
30 Nepheline syenite
36 Frit 3134
14 Flint
20 EPK
--------
100
2 Red iron oxide
1.5 Cobalt carbonate
4 Rutile
----------------------------------------------------------------------------
-------------------------------------------------
Ron Roy's Floating Blue Rev. 4
-----------------------------
37 Nepheline syenite
18 Gerstley borate
12 Frit 3278
2 Whiting
18 Flint
13 EPK
--------
100
2 Red iron oxide
1.5 Cobalt carbonate
4 Rutile
----------------------------------------------------------------------------
------------------------------------------------
Ron Roy's Floating Blue Rev.5
-----------------------------
18.5 Nepheline syenite
11 Custer feldspar
9 Gerstley borate
24 Frit 3278
3 Whiting
1.5 Talc
13 Flint
20 EPK
--------
100
2 Red iron oxide
1.5 Cobalt carbonate
4 Rutile
----------------------------------------------------------------------------
--------------------------------------------
Ron Roy's Floating Blue Rev. 6
-----------------------------
22 Custer feldspar
36 Frit 3278
4 Whiting
3 Talc
8 Flint
27 EPK
--------
100
2 Red iron oxide
1.5 Cobalt carbonate
4 Rutile
Test away and please post the results to the list--especially anyone who
tests with the Ffrit 3278 variations. Thanks!
Greg Lamont
3011 Northwood Dr.
Ames, Iowa 50010-4750
515/233-3442
gdlamont@iastate.edu
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