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spraying paint on cabinet door cope and stick profiles

Matt Atkinson Member


Trying to help my rookie finish guy avoid tiny "holiday" lines where door panels meet the inside profiled edges on cope and stick doors. I'm not a finisher so it's a little hard to advise him. It appears that the spray just bounces out at the inside corners. It's a very thin area right up against the profile and all the way around the panel. I want to see a small filet of paint there. We are using a Kremlin and Sherwin Williams CV. Thoughts?

9/19/19       #2: spraying paint on cabinet door cope ...
Jared Emery

If your panel moves, the bridging will crack. If you want the gap filled, consider caulk.

9/19/19       #3: spraying paint on cabinet door cope ...
matthew atkinson

It's not a gap. Caulk or not the paint won't lay down in the corner. It's like the spray eddys around in the corner and the paint won't lie down.

9/19/19       #4: spraying paint on cabinet door cope ...
Jared Emery

If paint is bouncing off inside corners (like spraying inside a drawer box or a cabinet with the back on), try reducing air pressure on the gun. If it's an AAA gun reduce pump pressure.

9/19/19       #5: spraying paint on cabinet door cope ...
Mark B Member

Im no finisher either and Jared's info of backing off on the air would make sense.

When I have pesky corners that the material gets blown out before it can lay down I try to either dial back the air and material slightly and lay in a few passes of light coats before laying on the final coat but that level of fussing on doors would be a nightmare.

I'd be nervous about a fillet of finish but your definition of a fillet and mine may be different.

9/19/19       #6: spraying paint on cabinet door cope ...
Leo G Member

Are you doing a box coat or just spraying in one direction?

9/26/19       #7: spraying paint on cabinet door cope ...
Jim Conklin  Member


We call it an "air trap" where the air rebounding from the corner defeats the air trying to get in the corner.

An auto guy showed me how to "sputter" the tight corners first. 1) align fan pattern with the edge/corner aiming in at half the angle the of the corner (45 degrees on a 90 degree corner) 2) drop your hand (angle the gun) about 10 degrees so the paint 'rakes' into the corner rather than aiming straight in (the bottom edge of the fan is closer, the top farther) 3) pull the trigger once and release 4) move along the corner half a fan width and pull the trigger ... and so on stepping along the crack.

Psst, move, psst, move, psst, move ...

Awkward at first, but with practice you can move quickly. We reduce fluid flow a little when doing it.

9/29/19       #8: spraying paint on cabinet door cope ...

Not being able to get paint into an area because of a profile causing air to bounce back and create a shield is called Faraday effect. Faraday actually occurs in electrostatic finishing but the effect is the same.
I have been able to somewhat beat the Faraday effect by taking the gun and turning it to the left about 45 degrees and then moving my hand to the left. This causes the paint to be pushed into the corner and the Faraday won't be in effect as you aren't spraying perpendicular to the surface like you are supposed to.

9/30/19       #9: spraying paint on cabinet door cope ...

First question. Are you spraying them(doors) horizontally or vertically.

CV is usually watery in my experience. If you are spraying vertically you are always concerned about runs. In that case I can understand your problem with the corners.

We always spray horizontally. We never have a problem with coverage.

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