Diane Palmquist on sun 7 dec 03
----- Original Message -----
From: "Diane Palmquist"
To:
Sent: Sunday, December 07, 2003 7:58 AM
Subject: Re: Re: Laguna Glaze
> Hi Jon,
> What about the problem with the foam in the glazes? I have experienced
> similar problems. Why is this happening and what is the solution? Every
time
> it is stirred it gets a layer of "soap" bubbles.
> Thanks- Diane
> ----- Original Message -----
> From: "Jon Pacini"
> To:
> Sent: Friday, December 05, 2003 1:07 PM
> Subject: Re: Laguna Glaze
>
>
> > Greetings All---- Shawn, Shawn, Shawn how cynical can you get ---
leaving
> > the bentonite out to save a buck. Really??? The reason Laguna Dry
Glazes
> > have no suspension agents added to them is because it takes different
> types
> > and amounts of suspending agents depending on if you're spraying,
dipping
> or
> > brushing. Give us a little credit please :)
> >
> > Best regards
> > Jon Pacini
> > Clay Manager
> > Laguna Clay Co
> >
> >
> >
> >
> > Date: Thu, 4 Dec 2003 17:57:06 EST
> > From: Shawn McGuire
> > Subject:
> >
> > You should try adding a small persentage of bentonite to hold the glaze
> in
> > suspention, for some reason Laguna does not put a suspention agent in
> their
> > dry
> > glazes, my guess is that it's a way for them save a buck...lol
> >
> >
>
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> >
>
Michael Wendt on sun 7 dec 03
The question of soap bubbles in glaze was raised. Feldspars are produced
using a process called froth flotation which employs a surfactant that makes
soap like bubbles to which the feldspar attaches itself while the silica
settles out.
If you see a lot of foam in your glaze, add lots of extra water, let the
glaze settle and then remove as much water as you can without catching any
of the solids. A siphon works well for this. After a few water changes, the
foam agent is so dilute it no longer causes the problem but be aware, you
may lose dissolved glaze ingredients that are a key to your glaze so test
the unwashed and washed versions side by side to find out before you put
the washed glaze into full production.
Regards,
Michael Wendt
Wendt Pottery
2729 Clearwater Ave
Lewiston, ID 83501
wendtpot@lewiston.com
www.wendtpottery.com
Diane asked:
> Hi Jon,
> What about the problem with the foam in the glazes? I have experienced
> similar problems. Why is this happening and what is the solution? Every
time
> it is stirred it gets a layer of "soap" bubbles.
> Thanks- Diane
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