Shizik & Antidot
Antidot
Hey Shizik, I was just looking at the chemical composition of different spray paint brands—did you know the particle size and solvent mix can really affect how a mural ages on a concrete wall?
Shizik
Yeah, the tiny grit does matter—larger particles leave a rougher feel, and the solvent mix decides how fast it dries and if it cracks later. But honestly, I’m more interested in how the wall’s texture reacts to light at sunset. So pick a can that makes the wall sing, not just survive.
Antidot
So for that golden‑hour glow, I’d pick a matte, micro‑ceramic glaze—tiny crystal particles scatter the light, giving the wall a subtle, almost musical shimmer, while the low‑solvent base keeps it from cracking. Just a precise ratio: 0.5% silica, 1% alumina, rest of the binder. That’s the recipe that lets the wall “sing” instead of just standing there.
Shizik
Sounds fancy, but I’d still drop a half‑full of those tiny crystals on a concrete wall and see if the sunrise makes it hiccup or just hum. Keep the ratios handy—if it starts to bubble, I’ll know the binder’s tired. And if the paint sings, you might want to lock the door so the city doesn’t hear it.
Antidot
Sure thing. Here’s a quick cheat sheet for the glaze: 0.5 % silica, 1.0 % alumina, 0.2 % titanium oxide for a subtle glow, rest is the binder—use 80 % polyvinyl alcohol, 20 % polyethylene glycol. If you notice bubbling after you let it dry, the binder is definitely showing signs of fatigue. Keep the door shut if you think the wall’s going to start a concert—my last batch made the whole block buzz for a week. And by the way, I keep forgetting where I put my lunch, so if you’re looking for it, check the bottom of the can rack.