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FORUMS
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Dave Parvin
Joined:
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16-Mar-2005
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Started On : 04-Oct-2009 at 11:28:33 PM, #Views : 5823
Topic Subject : Plaster, etc. |
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Robert's advise to Google United States Gypsum and find your closest distributor is absolutely right on. I suspect that anyone reading this has been around long enough to realize that anything made for medical, aviation, or nautical use is marked up many times more than the same or comparable products for less glamorous uses. I would only buy dental plasters, hydro-stone, hydrocal, etc. from a dental supply house if I had no other choice. In my experience, purchasing such materials in small packages from dental suppliers cost at least three times as much as buying 100 pound sacks from my USG distributor here in Denver.
While you are on the USG site, BE SURE to click "Industrial Products" which will take you to "Art and Statuary." On that page you will be offered a number of useful publications. One is called"Industrial Plasters and Gypsum Cements: Versatile Products for Countless Industrial Applications." I must have discovered this about ten years ago and have been making copies and including it in my handouts for my workshops. It has six pages of incredibly interesting and useful information on a whole bunch of gypsum products. It has tables which list mixing ratios, strengths, setting times, expansion, etc. I promise you that you will find the information useful. It also gives you a phone number which you can call for technical advise. I know from experience that the guy who answers the phone really knows his stuff.
Good luck and good casting,
Dave
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