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which frit # is borax and which is high alkaline frit?

updated wed 31 mar 04

 

Logan Oplinger on mon 29 mar 04


On Mon, 29 Mar 2004 15:45:24 -0700, Llewellyn Kouba
wrote:

>I want to make a Tube-line Mix. The formula calls for as follows: But what
>is the frit # for a standard Borax frit and which # is an high alkaline
frit?
>
>Percentages given by weight:
>36% china clay
>36% quartz (interchangeable/ flint, silica)
>16 % ball clay
>4 % Whiting
>4 % standard borax frit
>4% high alkaline Frit
>
>Thank you
>Llewellyn Kouba
>Abbey Pottery

Hello Llewellyn,

There are more than one frit formulations for a high boron or a high alkali
content. Check what frits are available from your materials supplier.
Chances are that one of the more commonly available frits meet the
requirement for a borax frit or a high alkali frit.

A quick reference is the following table at Fusion Frits (no personal
affiliation):

http://www.fusionceramics.com/fritspec.htm

The component oxides are given in percentages, not equivalents.

Another source of info can be found at Digital Fire (no personal
affiliation):

http://digitalfire.ab.ca/cermat/material/f.html

Do a word find on the page for "alkali" or "boron".

Logan Oplinger
Another Pacific Island

Llewellyn Kouba on mon 29 mar 04


I want to make a Tube-line Mix. The formula calls for as follows: But what
is the frit # for a standard Borax frit and which # is an high alkaline frit?

Percentages given by weight:
36% china clay
36% quartz (interchangeable/ flint, silica)
16 % ball clay
4 % Whiting
4 % standard borax frit
4% high alkaline Frit

Thank you
Llewellyn Kouba
Abbey Pottery