[AH Theatre]

Thanks guys for the reply. After I posted the question I spoke to the sales guy at Alternative Home Theater (where they sell the Goo system) and he said “Do not add any colorant to the Goo paint. It will ruin it” I asked him why and he really didn’t have a solid answer other than “It will ruin the reflective properties of the paint”. I’m not sure if that is really the case, but I don’t think I will chance it. Maybe I’ll use some for experimenting and see what the results are. I’ll keep you posted.

Thanks

Great forum here and glad I stumbled upon it. I'm the guy Gregavi spoke to, I'm not the manufacture but I'll try to elaborate a bit more, Goo Systems is a division of Tri-arts manufacturing which manufactures some of the highest quality artist paints in the world, all of there pigments are custom blended and ground using proprietary equipment for the sole purpose of reflecting light, Screen Goo does not use any extenders which are found in off the shelf paints to substitute expensive pigments (this is fine to color your bedroom wall but not if your trying to reflect complex colored light patterns produced by video projectors). Trying to add an off the shelf colorant to the reflective basecoat will completely change it's reflective characteristics and adding a colorant to the semi-translucent/diffusive topcoat will affect how light will travel through it if at all. Hope this helps.

 

[AH Theatre]

Hi Zman, welcome to the forum! :wave:

According to the info I've read from Liquitex they don't use extenders either, even in their soft body acrylics; and my question still stands about how Goo creates their gray mixes. If Goo wasn't so expensive I would try this experiment (adding black artist acrylic to "white" Goo) myself.

Do you know what the reflective ingredient in Goo mixes is?

Thanks for the welcome.

Screen Goo's front projection coatings all start out as there reference CRT White coating to which they add colorants designed specifically for there screen coatings. Adding a black artist paint (even Tri-Arts) would diminish it's performance.

I hate to disappoint but there isn't a specific single ingredient that makes Screen Goo reflective, rather it's a combination of premium acrylics with very low light absorption characteristics, high concentration of pigments that have gone thru Goo Systems proprietary dispersion and treatment techniques to maximize there reflective properties and the knowledge to be able to put it all together.

 

[AH Theatre]

Your not being rude at all, different opinions and view points help us all to learn. But perhaps I'm missing the point on something, why would anyone want to alter white Screen Goo to try and make a grey coating when you can buy one of Goo Systems grey coatings that are ready to use out of the jar? The cost of the white and grey coating are the same.