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Dan Spector
Joined:
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02-Jan-2008
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Started On : 30-Jul-2009 at 10:12:57 AM, #Views : 6053
Topic Subject : Re: Re: Plaster turning moldy - HELP |
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Nancy
There are dots and then there is real mold. If you are casting the
hands in USG's #1 Casting Plaster, be advised the plaster contains
starch, which moves to the surface along with water that is
evaporating. The starch layer in the surface makes the piece easier
to paint and makes the surface tougher than it would be otherwise
(Pottery Plaster doesn't have it.) But guess what: flies love the
starch. They walk around licking it. Then they fly-poop. This gives
the tiny dots i think you have.
Wash them away, brushing with a soft brush or washcloth. All you can
do is let them dry shielded from flies.
CJ's advice seems to imply very thick castings and very cool, damp
weather. Normally in July in Memphis, hands would be fully dry in 2
days. This year, it will not stop raining. So I would put new work on
a rack in front of a box fan.
Mold looks like funny little blotches, maybe dime sized, both red and
grey-black. Causes cancer? Good lord. I wash it, put it in full sun,
and use watered-down bleach. I haven't tried the milk finish for fear
of the flies.
Good luck
Dan Spector
901 323 8717
www.lifecast-art.com
dan@archicast.com
On Jul 30, 2009, at 4:44 AM, aliforum@lifecasting.org wrote:
> ------------Silica-Free & Oh So GREEN------->
>
> NEW! MoldGel SILFREE. A revolutionary formula.
> Made with all food-grade ingredients. It nourishes
> the earth when discarded. 3-to-1 mix ratio yields
> twice the volume as those 1-to-1 brands. Delayed
> shrinkage for delayed casting - so creamy smooth, too.
> To learn more about it click here
> ---------------------------------------------->
>
>
> Hello Dan Spector
>
>
> Post Date : Thursday 30th 2009f July 2009 05:37:55 AM
> Posted by : "CJ Munn" cj@rockabelly.co.uk
>
> Re: Plaster turning moldy - HELP:--
>
>
>
> Hi Nancy
>
>
> Wear a mask and gently sand off the black mold. It's carcinogenic, so
> you mustn't forget the mask. You can get anti-fungal sprays from DIY
> stores to help prevent it coming back, but I think you need to look
> at why it was there in the first place.
>
> It doesn't sound like you are drying your pieces effectively. Make
> sure they are in a nice, airy, dry room to dry out with space for air
> to flow around them and not too near any heat sources and give them
> several weeks to do so. It makes me cringe when I see websites
> advertising one week turnaround of lifecasts because moisture is
> still locked deep inside the casts and takes many weeks to come to
> the surface (depending on the thickness of the cast and the type of
> plaster used). When TOTALLY dry (not to be confused with the basic
> setting time given on the instructions), the plaster should have
> turned a beautiful white colour rather than grey/blue/cream tinged.
> If you want to be fancy, you can even get those little gadgets that
> test for damp in houses (but only the more expensive ones seem to
> have any level of accuracy). But the most important thing is that
> plaster can reabsorb moisture just as easily as it gives it up to the
> air. So don't have it near windows/open vents/anywhere damp. And you
> need to seal the piece whether or not you are painting it. There are
> many clear sealants suitable, but a very basic one is a mixture of
> 1:1 PVA glue to water. That's the cheapest and most basic but you
> will need to experiment to find a sealant you like as some yellow and
> some blue over the years. Water based ones are best, in my opinion.
> Matt sealants may need a few coats to prevent black mould, but glossy
> sealants can make lifecasts look plastic-y and cheap. Another good
> one is full fat cow's milk, but you need at least 5 coats of that for
> it to be worth doing, so in terms of time it's only worth it for
> special pieces, but does give a lovely marble-like glow to the piece.
>
> Best wishes
>
> CJ
>
>
> On 30 Jul 2009, at 01:23, aliforum@lifecasting.org wrote:
>
> > ------------Silica-Free & Oh So GREEN------->
> >
> > NEW! MoldGel SILFREE. A revolutionary formula.
> > Made with all food-grade ingredients. It nourishes
> > the earth when discarded. 3-to-1 mix ratio yields
> > twice the volume as those 1-to-1 brands. Delayed
> > shrinkage for delayed casting - so creamy smooth, too.
> > To learn more about it click here
> > ---------------------------------------------->
> >
> >
> > Hello CJ Munn
>
> >
> >
> > Post Date : Wednesday 29th 2009f July 2009 08:18:03 PM
> > Posted by : "Nancy Lewis" nanny_toot@hotmail.com
> >
> > Plaster turning moldy - HELP:--
> >
> >
> >
> > Hi - I need help - FAST
> >
> > I casted a pair of hands for a wedding gift and now I'm seeing
> > small black spots all over the piece - I fear it's mold. How can I
> > safe my work????
> >
> > Nancy Franck
> >
> >
> >
> >
> >
> > "A cat is a lion in a jungle of small bushes." - Indian Saying
> >
> >
> >
> >
> >
> >
> >
> > EMAILING FOR THE GREATER GOOD
> > Join me
> >
> >
> > > Date: Thu, 9 Jul 2009 08:00:17 -0400
> > > To: nanny_toot@hotmail.com
> > > Subject: ALI FORUM
> > > From: aliforum@lifecasting.org
> > >
> > > Hello Nancy Lewis
>
> > >
> > > In the series to promote the art of life casting world wide, this
> > e-mail has been sent through your account with ALI Forums
> > > Summary Report
> > >
> > > · A Quick review on number of messages posted today
> > >
> > > There are 1 messages
> > >
> > >
> > > Re: ALI FORUM by Justine Holcombe
> > >
> > >
> > >
> --------------------------------------------------------------------
> > > Detailed Messages
> > >
> > > Post Date :2009-07-08 08:23:34
> > > Posted by : Justine Holcombe
> > > Subject : Re: ALI FORUM
> > > Thankyou for your e-mail. The Impala Impressions studio will be
> > closed until Wednesday 22nd July, when we will be able to respond
> > to your enquiry.
> > >
> > >
> > >
> > >
> > >
> >
> >
> >
> > ALI is an international organization whose members are engaged in
> > the art and creative industries. Its purpose is to promote the art
> > of life casting, create public awareness of this unique art form
> > provide its members with forums to exchange information, resources
> > to enhance their effectiveness and advance opportunities for their
> > artistic success.
>
>
>
>
> ALI is an international organization whose members are engaged in
> the art and creative industries. Its purpose is to promote the art
> of life casting, create public awareness of this unique art form,
> provide its members with forums to exchange information, resources
> to enhance their effectiveness and advance opportunities for their
> artistic success.
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