Hi Everyone. I'm working on a mirror box for a 20" dob. I've painted the interior with Rosco Super Saturated Velour Black paint (vinyl acrylic), which is popular with A/V enthusiasts for painting home theaters. However, I must say that I'm disappointed in the paint's apparent lack of blackness. I've recently stumbled upon this article by Gerd Neumann Jr, which recommends mixing sand with chalkboard paint. As I understand it, the sand provides a rough texture to the finish which helps to avoid reflecting light.
I've paid a lot for my Rosco Velour Black paint, and would like to try mixing sand with it before I abandon it for a different kind of paint. Has anyone here tried mixing Rosco paint with sand? Any tips?
The Gerd Neumann Jr article suggests a 1:1 volumetric ratio for mixing as a starting point. I'd like to hear what mixing ratios worked well for you.
I found a home improvement article that recommends mixing play sand to create a non-slip painted floor surface, so that's the stuff I plan to use in attempting this.
I will test on a piece of scrap wood of course, but hearing what worked well for others would be great.