Originally Posted by cbtk
Any chance you can find someone to record you painting with the Graco? I'm curious to see how the gun lays the paint. The manuals indicate a fan width of 6" at it's widest.. so that's be at least 2x as many passes with the Graco compared to the CS Plus (~12" wide). Maybe we have to keep an eye out for banding with this gun.
We deal in "Height" not "Width" when discussing the spray Pattern.
Actually, that's about the same size they tell you to expect from the Wagners. But the Mfgs of both guns don't figure that the end user will be diluting the paint with between 25% to 30% water.
The resulting fluidity combined with the air pressure, needle size and the distance maintained from the surface is what will ultimately determine the height of the spray pattern.
As far as banding, with whatever gun is used, that usually occurs because of one or a combination of two reasons.
1. The paint is too thick resulting in a too dense application that coats a limited area too heavily.
2. There was not enough overlapping of the previous row.
Even with a 6" to 8" high pattern, if one effectively overlaps each row by 60-70%, Banding should not occur under normal circumstances. But not thinning the paint enough can almost make that inevitable.
Getting "too much" paint on at any one time using the ulta thin mix is the real potential issue, hence the first two initial extremely light "Dusters" and the fairly rapid motion across the screen when doing the slightly heavier Finish coats. The large overlap done during Dusters and Finish coats is the best preventative against Banding.