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I posted a response under the “powdercoating” query and noticed that I had these links in my bookmarks, so will post them in case you haven’t checked them out (I looked these up about 6 months ago, so there could be some other’s out there now):

The “professional painter and wall covering web site” which has a chat room that I didn’t look at and also has “Dr. Paint answers your questions…”:

http://www.paintstore.com/index.html

The web site that is “a service to the finishing industry”

http://www.paintcoatings.net/

(There is a link to a discussion board that I didn’t try and it has links to house paint usage calculater and to
a “virtual house painting site” which lets you waste time trying out some
fairly mild colors on several types of houses)

And, as I listed under “powdercoating”, a “Coatings Clinic” discussion board which seems to mostly have questions relating to paint:

http://www.horizonweb.com/wwwboard/Coatings/wwwboard.html

(The discussion board has about 50 screens worth of discussion going back to mid 1997, so it might take a while to load completely, but the first screen pops up pretty quickly.)

Any other related sites out there?