So I have a Warmoth Swamp ash body that I'm grain filling. Using this Solarez stuff: Pretty nifty. It cures in the sun in minutes. Anyway, I put several coats on there. First time doing this- honestly I probably put on too much. Anyway, I'm sanding it back with a random orbit palm sander and some 220 grit paper. As I sand, I'm seeing these white areas- hopefully it shows on the pix. Doesn't totally obscure the grain, but it's not as apparent as the other areas. It's most prominent toward the edges: So my questions are: What are those white areas? Should I keep sanding? My guess is that's the solarez, and those are either areas where I didn't get quite as much on there or areas where I've sanded a little more. I mean, if I sanded through to the wood, I'd certainly be able to see the grain. The actual wood isn't washed out like that. So my guess is that I should keep sanding "through" the white stuff till I see something more like wood. Another factor: I'm not making sawdust yet with the sanding, just fine white powder (insert joke), which is the cured solarez stuff. What do you think?