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Joined:
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31-Dec-1969
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Started On : 07-Aug-2006 at 08:30:01 AM, #Views : 6091
Topic Subject : Re: Mixing Gypsum |
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Diane
Sure enough, looked up the USG PDF. And there's the silica. But look again.
It's less than 1% and they say they cannot detect it in the air. So unless
you are using a huge batch mixer, relax. I usually wetsand or rasp while
fresh.
It's nice to dry plaster the official hot-chamber way but hardly necessary.
All you need is warm dry air moving all around the new casting. I have a
boxfan in front of a heavy wire tray. Outside I have a few pallets and the
southern sun (the whole country now knows how that feels.)
Dan
> From: aliforum@lifecasting.org
> Date: Fri, 4 Aug 2006 23:58:05 -0400
> To: archicast@earthlink.net
> Subject: Re: Re: Mixing Gypsum( Message No. 1090)
>
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>
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> -------------------------------------------------------->
>
> Hello Dan Spector
>
>
> Post Date : Friday 04th of August 2006 11:58:04 PM
> Posted by : "Diane Rossong" Diane@lastingimpression.net
>
> Re: Re: Mixing Gypsum:--
> Thanks for pointing that out. I can only use it on my solid casts
> then.(hands/feet)
> I will try hydrocal wh for for my other casts.
> But if you go on usg's website gypsumsolutions.com that is where I got that
> info. The gypsums that I looked at all have silica in it. Look at their
> safety data sheets you can find out what is in all of their gypums. so using a
> resporator/dust mask if sanding or tooling is probably a good idea.
>
> It also says that their gypsums should be put into some sort of drying chamber
> or room "to get the maximum physycal properties to develope" with heat and
> ventalation. I really am hoping that it can dry on its own over a period of
> time.
>
> Diane
>
> 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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