piedpotterhamelin@COMCAST.NET on sat 20 dec 03
Duncan glazes have issued a recall on their LL100 and LL100D low lead glazes due to toxic lead release.
You can read the .pdf file at www.duncanceramics.com/ceramics/files/97.pdf or go to http://www.duncanceramics.com/ceramics/section.asp?SID=10 and click on glaze recall.
--
"Many a wiser men than I hath
gone to pot." 1649
> Hi Bruce,
>
> Boron is the answer - if you look at the dilatometer charts in chapter 5 of
> uor book you will see - they all are soft at 700C - that is after they have
> been fired to cone 6 though.
>
> Adding more boron will bring them down.
>
> Use as much frit as you can - it's already been melted to it will remelt
> faster - start with 3134 and kaolin - watch out for running.
>
> 3134 - 60.0
> EPK - 25.0
> Silica - 15.0
> Total - 100.0
>
> 3134 - 45.0
> 3124 - 25.0
> EPK - 12.0
> Silica - 18.0
> Total - 100.0
>
> Start with these and keep upping the frits - remember - it's the boron that
> will do the work down at 600 - long soaks will certainly help the melting a
> lot.
>
> RR
>
> Does it have to be a stable glaze?
> >Anybody have any idea what kind of fluxes or perhaps what kind of frit could
> >I use to get a base glaze to melt at about 600 degrees C? I would, of
> >course, like to avoid the use of lead.
> >
> >Any suggestions are welcome.
> >
> >Bruce Girrell
>
> 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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