Thanks for commenting, Marc. I appreciate all the complements as they help keep the motivation high.
Frank, for aluminum, I have been using Tamiya white primer, sprayed on very thin leaving some metal showing through. Paint still scratches off easily though. I read that paint won't stick to aluminum because of the smooth surface, but I'm not totally convinced that is always the case. There are primers for aluminum available in stores here. It has a acid that etches the surface so paint sticks to it. I don't know what happens to the acid, though, whether it just stays on the part or get neutralized somehow. I may try some of it someday.
Anyway, time for an update. I've been working on numerous things, all in progress at this time.
Cowling painted black with smudged fingerprints on it.
It has two out of three wings on it.
I can't believe how weak and spindly the landing gear legs are. There are no attachment points either. Hopefully, Meng/WNW has addressed this on their kit. I was drilling some shallow holes for the legs to locate in, when the drill blew through the fuse just above the wing root below the engine intake. Another repair job to do! One can see how easily dirt and dust shows up on a gloss black surface.
Jacob's plane had these reinforcing struts on the landing gear.
Wheels. Don't know if the access to the valve was open or not.
Still many details to finish on these items I've shown.