With all the parts scuffed, cleaned and prepped, it was time to apply some primer. I use the SEM brand self-etching primer and I think I've got my system down pretty good now and I'm happy with the results. To me it seems the key is to not get crazy on the first spray, just do steady passes and try not to repeat any areas unless you really have to. Let that dry for about 30 minutes and then repeat another steady but slightly quicker passes. Again using only rattle cans and a spray paint 'gun' and it seems to be adequate for what I need to do the empennage parts. Not sure if this will suffice for the bigger parts of the build. With all the parts primed and dry, added labels since many of them are mirror image parts and it would be easy to confuse them or use the wrong one. I haven't shown my paint booth too much, not sure what the neighbors think but it's already getting pretty dusty on the inside. Might be time soon for some new plastic sides and filters. So far so good and it's been adequate for what I'm doing. The SEM primer is nasty stuff for sure.