Troubleshooting Grain Raise with Waterborne Finishes
Question (WOODWEB Member) :
Grain raising should not occur doing this.
From contributor B:
You must be new to WB's. WB and grain raise go hand in hand, especially when using WB dye's and stains but really it isn't that big a problem . Sure it's a little rough but 400/320 and synthetic steel wool and you're good to go.
From the original questioner:
I've been working with Target coatings (9000) and didn't do any grain raising prior to coating. I just figured that a first coat would handle that and I could move on. The trouble is after like three wet coats I'm still getting some roughness. The sanding is getting old.
From Contributor J:
My guess is that after three coats it's not grain raise but microbubbles or dry spray. Take a close look at it.
From contributor A:
It’s not likely to be microbubbles since fuzz is present. Sanding is part of the problem. It breaks the fuzz leaving a clear path for the next coat to get down to the substrate. Try two or three coats without sanding. This will seal in the grain raise.
From contributor B:
“I've been working with Target coatings (9000) and didn't do any grain raising prior to coating.”
I used Target for two years here on the west coast until shipping was a problem and they along with every other/my current WB coating raises the grain.
From contributor F:
I found out through a lot of trial and error that regardless of the brand, WB finishes seem to prefer to be applied in lighter coats. The lighter the coats the fewer problems I seem to have overall with issues common to WB finishes including grain raise, dry times etc. When I learned to lighten up, the need for pre wetting/grain raising or dewaxed shellac were minimized to the point where now I don't even bother with them unless I want the shellac to help the overall appearance of the finish.
I've used brush sanders to great effect actually sanding the stain coat after it popped really badly. A light dust off of the raised grain in the stain is often just want the doctor ordered.
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