Tena Payne on wed 28 jul 99
Ron,
I've looked for the formulas for these frits... no luck... what's the
difference between 3124 and 3134? Are they interchangable? With what
effects?
Thanx in advance...
Tena
Birmingham
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Ron Roy on tue 3 aug 99
Hi Tena,
I'll list the analysis below for each - but first a little editorializing.
Most potters by frit 3124 because it's cheaper than the other boron frits.
Keep in mind - you are usually buying Frit to get the boron - everything
else you can get else where and a lot cheaper. My point is if you are
buying boron in an insoluble form then look at the % of boron in the Frit
and then look at the price.
Frit 3124 has 13.7% boron.
Frit 3134 has 23.1% boron. There is another benefit to 3134 - no alumina -
in 3124 there 9.9% Al2O3. This means you can get less raw clay in the
bucket with 3124 - and fritted glazes are more difficult to keep suspended.
All that starts to change when you are having problems with too much clay
in the bucket - then 3124 becomes more attractive cause it will supply some
of the Al2O3 and you can then lower the raw clay - but again it's gona cost
you cause it has less boron and you will have to use more to supply the
B2O3 you need.
Frit 3124
SiO2 - 55.3
Al2O3 - 9.9
K2O - 0.7
Na2O - 6.3
CaO - 14.1
B2O3 - 13.7
Frit 3134
SiO2 - 46.5
Al2O3 - none
K2O - none
Na2O - 10.3
CaO - 20.1
B2O3 - 23.1
More than you needed I'm sure but looking at frits with an eye to what you
need or don't need will help solve glaze problems and lower costs.
RR
>----------------------------Original message----------------------------
>I've looked for the formulas for these frits... no luck... what's the
>difference between 3124 and 3134? Are they interchangable? With what
>effects?
>Tena
Ron Roy
93 Pegasus Trail
Scarborough, Ontario
Canada M1G 3N8
Tel: 416-439-2621
Fax: 416-438-7849
Web page: http://digitalfire.com/education/people/ronroy.htm
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