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Old 12-13-2010, 12:49 PM   #1
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Staining Know How Assistance


I am in the process of sanding a shelf(that has not ever been stained) and applying polyurethane. After sanding and then staining the wood, I applied a coat of polyurethane over the stain. Upon the polyurethane drying, the surface of the wood became very rough. What is causing the roughness? I am assuming that it is the polyurethane that has caused this. Am I supposed to lightly sand the surface after applying the polyurethane and reapply another coat or use something else over the stain? Thanks!

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Old 12-13-2010, 04:51 PM   #2
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Staining Know How Assistance


You have 'raised the grain'. When completely dry lightly sand the surface using a very fine grit paper, 320 or so, and then apply another clear coat.

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Old 12-14-2010, 12:07 AM   #3
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Staining Know How Assistance


4 questions:

1) What species of wood are you doing?
2) Oil-based stain or Water-based?
3) Oil or Water-based Poly?
4) What brands of Stain & Poly?

For shelves, I'd do 4 coats of Poly. 2 coats is only a BARE MINIMUM...IMO.
2 Coats only STARTS to look even.
If Oil Poly...usually have to wait 8-12 hours for each coat to be decently sandable. Depends on the brand and your home/shops' environment.

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