Talk:Plaster

Medical plasters

Some how we need to find a better wasy to deal with plasters used in medicine such as Mustard plaster. I know this is mainly a historical topic but we do need to cover it. I dislike that this whole page be about paster of paris. If I knew anything about these medical plaster I would try and fix it. But I was just looking to link to such information.--Birgitte§β ʈ Talk 01:40, 5 October 2006 (UTC)[reply]

Really, this is just a few more articles away from becoming a mere disambiguation page. All thats needed is a good article on the many different cultural uses of the word, set to branch out as chunks become too long. Zaphraud 09:29, 13 January 2007 (UTC)[reply]

I think there is a huge need to include the medical orthopedic uses of Plaster of Paris. It is largely used in fracture and serial casting procedures. It is the original casting material and still remains as one of only two largely used products for such a large area of emergency and rehabilitation medical practice in place today.Chubbyblondebabe 21:50, 12 February 2007 (UTC)Chubbyblondebabe[reply]

Origins of

Shouldn't there be some mention of this? Jachra 21:14, 20 February 2007 (UTC)[reply]

Yes. Here is the reference to history of the name Plaster of Paris

http://www.galleries.com/minerals/sulfates/gypsum/gypsum.htm

SmokesLikeaPoet 16:33, 3 August 2007 (UTC)[reply]

Dangers of Plaster of Paris

http://newsvote.bbc.co.uk/1/hi/education/6485481.stm

I'm interested to know more about this. There's not much here about plaster being dangerous! Does the plaster re-heat up when you mix it with water?

Hi, Yes there is an ~~endothermic~~exothermic reaction, although this is not really “news“ as it has been known ever since plaster was first used, which dates back to at least The Romnans ThanxTheriac 18:05, 25 March 2007 (UTC)[reply]

I would have to disagree to the Silica / Cancer relationship. Silica is known to cause ( or correlate with, I'm not sure ) cancer in laboratory animals. http://www.cdc.gov/niosh/npg/npgd0553.html

in construction grade plaster of paris the concentration of silica is less than 1% by mass.

http://www.dap.com/docs/msds/english/00071008E.pdf

I highly doubt that apsirating even a large quanity of suspended plaster of paris dust would cause anything greater than a case of the sneezes. I think this wording should be altered to qualify the statements.

SmokesLikeaPoet 16:27, 3 August 2007 (UTC)[reply]

New evidence is suggesting that inhaling plaster can be extremely harmful particularly in the long term regardless of silica content. This is taken very seriously in professional industry. Safety instruction on plaster instruct to use gloves when handling dry uncured plaster, and to wear an appropriate respirator when mixing plaster or sanding cured plaster. I'll pull up some sources later. -Verdatum (talk) 18:20, 8 February 2008 (UTC)[reply]

Copyvio text from Minerva Conservation

I removed a large amount of text that was a direct copy of http://www.minervaconservation.com/articles/externallimerenders.html. If the topic of lime rendering in historical conservation is pertinent to this article, then the text should be properly cited and written in an author's own words, not directly copied. --Elkman ^(Elkspeak) 19:47, 3 May 2007 (UTC)[reply]

History

This article needs a history section explaining the invention/discovery and whatnot. -- Beland 02:12, 31 August 2007 (UTC)[reply]

Plaster Vs. Plaster of Paris

I am under the impression that 'Plaster' and 'Plaster of Paris' are not synonymous. I have always understood that plaster of paris is a specific formulation of plaster that is fairly weak and inexpensive. High performance gypsum plasters are almost never referred to as 'plaster of paris'. I will do more research on this. -Verdatum (talk) 18:14, 8 February 2008 (UTC)[reply]

The original plaster of Paris is much more expensive and highly refined than normal plaster, and used for casts of sculpture etc, not in building. I agree the article is in a mess over terms. Johnbod (talk) 16:57, 4 October 2008 (UTC)[reply]

Plaster vs Faux Plaster

In this article there is mention of plaster being used in the faux painting industry. All of these plasters are actually mixtures with film forming agents in them and should be classified as paints. There is a lot of industry confusion because manufacturers are trying to capitalize on the concepts of "authentic plaster" but I am almost certain that they are not. The term Faux plaster or textured paints would be more appropriate. The images that are shown are veneer textures that were applied over paint and contain poly resins and are technically thick paint made to look like plaster. —Preceding unsigned comment added by 76.25.45.143 (talk) 04:32, 9 March 2008 (UTC)[reply]

split

This article should be split apart, with an overview left here, and the things split off into individual articles. Especially, plaster of Paris needs to be split off and clarified. 76.66.195.159 (talk) 13:37, 12 December 2008 (UTC)[reply]

Lime plaster already has its own article, but Plaster of Paris redirects here, and certainly does need its own article. I think the meaning of the term has varied considerably across time and space, which causes confusion. Johnbod (talk) 13:50, 12 December 2008 (UTC)[reply]

At this time there is not enough content to justify a split. If someone is able to write a plaster of paris article, that would be wonderful; however it is not currently well defined here. The other sections are all relatively small, and well within the scope of plaster. If any section becomes larger, as to encroach upon WP:SIZE or begins to give the appearance of undue weight, we can split it off at that time. -Verdatum (talk) 18:23, 14 January 2009 (UTC)[reply]

How its made

how do you make regular plaster??? idc about all that other stuff i just wanna know how to make it!!!!!!!!!

Assuming you're talking about standard multifinish plaster, it's made out of gypsum (the same stuff that blackboard chalk is made from). Ground into a very fine powder, various other things added. There are different varieties and formulations, but (most) modern plasters are based on gypsum.