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Dan Spector
Joined:
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02-Jan-2008
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Started On : 05-Oct-2009 at 10:10:58 AM, #Views : 5994
Topic Subject : Re: Re: Plaster, etc. |
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I have a bag of FGR-95 that is approaching 20 years old and it is
still OK. It all depends on how it's stored. USG will not guarantee
anything but a minimal shelflife since conditions vary widely.
USG used to have reps who would visit users and advise us on things
we might try. Then they'd prevail on the company to send a couple of
sacks of this or that to your local distributor. Those reps, those
days, are gone. The authority at USG you'll call is Loren Miller. As
much as USG has lowered service, Georgia-Pacific is far worse. Their
products are misty myths to me.
I'd had no idea the dental plaster set so fast, that is tempting.
Dan Spector
dan@archicast.com
On Oct 5, 2009, at 12:03 AM, aliforum@lifecasting.org wrote:
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> Hello Dan Spector
>
>
> Post Date : Monday 05th 2009f October 2009 12:54:13 AM
> Posted by : "Diane Rossong" Diane@lastingimpression.net
>
> Re: Plaster, etc.:--
> That is right Dan, if you can get it, the distributor for USG in my
> city only carry hydro-cal,. hydrostone and fgr 95.
>
> I find myself repeating myself, I guess because I didn't make it
> clear.
> The dental gypsum I use, you can't get from usg, I bought it
> because it is extra fast setting. 2-3 min working time, 5 min set.
> for the mother mold for pregnancy castings. wanting to get great
> strength and less time for the client to stand waiting for mold to
> be hard enough to take off. It was about for a 55lb box, so I
> use that one just for that purpose.
>
> The other thing is, it looks like USG has many other products that
> would be great to use, or at least to try. I have looked at that
> same website many times and have looked around for their other
> products. My distributor won't get most of them in because they
> have to order a pallet full/80 bags I believe. They won't do that
> for something that I just want to try.
> The other dental gypsum I have been using is 3 times stronger than
> hydro-cal white, I mainly got it because it is faster to get
> wanting to try the forton mg, but I am moving at the end of the
> month and the less crap to carry over to my new place the better.
> Just to give you an idea..
> I actually tried to order some of USG's Tufstone since it's
> strength is high. I would also love to try is their Dry stone,which
> it says that it is 16,000 if you oven dry it.
> or even the Statuary hydrocal.?
> Has anyone else been able to try these ones?
> When I attemped to order it from the only distributor that I could
> find, I found out that it actually costs more to ship them to me
> than the cost of a 50lb bag. So in the end the cost is not much
> different.
>
> Sorry I felt I had to explain since I really don't want to spend
> more than I have to.
> I am definatly going to try that forton mg.
>
> By the way, one question that I have never had answered and I have
> emailed, and called usg. They say that the shelf life of their
> gypsum is 6 months, so what happens to it after the 6 months? No
> one has answered that one.
>
> The same question for alginate has gotten me a few different
> answers, one company says the shelf life is 10 years and an other
> says 6 months, when I asked what happens to alginate past the shelf
> life they said that the set time would lengthen.
> I think they are fair questions to ask, are they not?
>
> Happy Casting!
> Diane Rossong
>
>
>
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