Warren, the technique I described above I have done with an Iwata w77, a Devilbiss jga, a Graco airpro and I don't remember what other guns. Most have been 2.0s but sometimes I will use a 1.8. The last time I did this I used Ilva products. I have also used PPG, Dulux, International and other products I have forgotten. I suppose I have to remember I have been spraying for a while but the last time I got out a buff was because of a bug landing and going walkabout. I had to buff the whole cabinet then because the gloss dropped a bit. I personally believe a buff is to fix up later what I should have done correctly in the first place.

I get a little edge roll on the lower edge of a panel but never the face. The 2mm radius is important for controlling this. I don't know what else to say. The technique just works. Cheers