Could somebody remind me please what variables in spraying cause orange peel? I was spraying shellac today (about a 2 lb cut) with an HVLP (turbine type sprayer) and all it went on very smoothly on the vertical surfaces, but on the one horizontal surface (a desktop – the most important surface) it got the typical undulations to the surface whcih looked like “orange peel”. Why the difference between horizontal and vertical surfaces? Too much air flow, too much fluid flow? Too close, too far? Please advise me. Thanks alot.
Jay
Replies
did you decrease either the distance from the spraytip to wood or decrease your travel speed when you went from vert to hort? some times if the humidity makes it harder for me to do hort surface, it wants to puddle. last watch to see if your fan pattern changes when you bend your wrist to do a hort surface. just my 2 bits worth. good luck.
Unless you mixed different batches, I agree that it was likely either the speed of your hand or the distance changed. On the Horizontal surfaces are you holding the gun so that you are still spraying at 90 degrees. In other words you should be spraying straight down. It is easy to start holding the gun at a angle. This allows the "outside edge" of the spray pattern to fall on an area you already passed over, and this outside edge of the pattern is traveling farther and will flash off more. I don't know if that makes sense or not.
Mike
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