RubySuMoon on mon 27 apr 98
Hi All --
I recently bought several 25 lb. Laguna ^5 glazes and added water per Laguna's
spects. Now we're having problems with a few glazes peeling up and falling off
the pots as they dry. Seems to be more of a problem with glazes poured over
top another glaze. Any ideas as to what's going on?
Also, I had a strange occurrence with a recent ^5 firing. A glaze (poured over
top another) literally flew -- not ran -- off the pot and I found leaf shaped
patterns melted on the shelf a good 2 inches away from the pot. What the
heck's going on there?
Su
Potting in Piedmont CA
Louis Katz on tue 28 apr 98
Sounds like salts in your water. We have problems with many of our glazes
unless we use distilled water. If your water is really hard you might try air
conditioner condensate (the water your air conditioner gives off) instead of
buying distilled or reverse osmosis water.
Some glazes however are just not made to go ontop of other glazes.
It may also be that your glazes are too thick or that your bisque was dusty or
greasy, although its doesn't sound like this.
Have you called Laguna, Were they helpfull?
Louis
RubySuMoon wrote:
>
> ----------------------------Original message----------------------------
> Hi All --
>
> I recently bought several 25 lb. Laguna ^5 glazes and added water per Laguna's
> spects. Now we're having problems with a few glazes peeling up and falling off
> the pots as they dry. Seems to be more of a problem with glazes poured over
> top another glaze. Any ideas as to what's going on?
>
> Also, I had a strange occurrence with a recent ^5 firing. A glaze (poured over
> top another) literally flew -- not ran -- off the pot and I found leaf shaped
> patterns melted on the shelf a good 2 inches away from the pot. What the
> heck's going on there?
>
> Su
> Potting in Piedmont CA
Jawoodside on wed 29 apr 98
I have had the exact same experience with Laguna cone 5 glazes and have
developed a few solutions which you might try. First even though you need a
fairly good thickness with those glazes to get a rich result, if you apply
that thickness in a single dip (I don't pour so I can't help you there), the
glaze will be too thick to dry without peeling. So whether you are trying to
get a nice thick application of a single glaze or a glaze over glaze effect
you will need to dip twice and manage the time interval between dips. Each
glaze will have a different "ideal" time interval for drying with glossies
needing more time than matt glazes. In general look for the first glaze to be
dry enough that you can pick it up without marring the glaze but not
completely dry--Like don't wait more than an hour for some glazes and not more
than 4 hours for others. Also if you are doing too separate glazes the first
glaze should be the most matt and the second should be a little more dilute
than the first. Gotta go now--if I can think of other stuff I'll write more
later. Good luck. Jane Woodside.
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