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In the final step of finishing my speakers I was putting satin wipe-on poly over my danish oil. The danish oil sat for 6 days on my walnut paperbacked veneer in my basement with a dehumidifier going. It was approx 70F degrees and 40 humidity. I forgot to shake on my second coat of poly and then added a shaken third.

I'm wondering if this is blushing or moisture. If it's blushing I can get a 'deblusher' but I need to order it and wait. If it's the cloudy poly then I need to likely strip and re-coat. If it's cloudy poly is there any way I can avoid that in the future? Perhaps put a gloss down for the first 2 then a final of satin (super well shaken).

To remove the coat should I just use an orbital with 220 grit (it's on paper backed veneer)

Blushing or Satin Blushing or Satin

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  • Impossible to be certain here but I doubt humidity is the issue as many people varnish in conditions much much more humid than where you are (it regularly tops 80% here, and most guys aren't running dehumidifiers). And unfortunately any time you don't shake or thoroughly stir a varnish that isn't gloss you can be certain that the matting agents were not evenly distributed, so it's all too easy to get a little more here and a little less there. This should have been clearly evident after that coat, the lighter areas would have been noticeably more matt.
    – Graphus
    Commented Sep 5, 2018 at 12:28
  • Re. getting the varnish off, I don't know how thick or thin your veneer is but many modern veneers are very thin and it's extremely difficult to sand off finish from them with complete success, sand-throughs along edges and especially in corners are all too easy. I always recommend stripping over sanding anyway to remove finishing, it's nearly always preferable, but the paper-backed veneer complicates things. I don't know how it responds (have zero experience and have never read up on it).
    – Graphus
    Commented Sep 5, 2018 at 12:31
  • I sanded and refinished and it got rid of most of it.
    – tjcinnamon
    Commented Sep 17, 2018 at 18:20

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I sanded and refinished and it got rid of most of it.

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