Hello,
I completed an oak dining table about four months ago, which I finished with about six coats of water-base poly. (I fumed the oak, no stain was used.)
After a couple months of use, white "streaks" or "lines" have started to show up on the table top, as you can see in the attached photos. One streak showed up on a glue line, but otherwise they seem to occur at random, though they don't show up on areas of deep grain. Upon close inspection, it looks like there are also long, faint "hairline" cracks in the finish at the same spots as the marks.
A bench I made about a year earlier and finished in the same fashion has not had any such issues.
The marks seem to be occurring only where the table has been used most - we usually only use the "right" end of the table nightly, which is where the marks are showing up. The "left" end has no marks.
I'm guessing it has something to do with water seeping underneath the finish? Maybe it's caused by glasses used without coasters, or from cleaning the tabletop? Or... any other ideas?
The main question is: what can I do now to fix these? I thought maybe I could gently sand these spots and reapply some water based poly... or perhaps I could do a gentle scuff sand and apply an oil based poly to the entire top surface - would that protect it better moving forward?
Thanks for any help!
I completed an oak dining table about four months ago, which I finished with about six coats of water-base poly. (I fumed the oak, no stain was used.)
After a couple months of use, white "streaks" or "lines" have started to show up on the table top, as you can see in the attached photos. One streak showed up on a glue line, but otherwise they seem to occur at random, though they don't show up on areas of deep grain. Upon close inspection, it looks like there are also long, faint "hairline" cracks in the finish at the same spots as the marks.
A bench I made about a year earlier and finished in the same fashion has not had any such issues.
The marks seem to be occurring only where the table has been used most - we usually only use the "right" end of the table nightly, which is where the marks are showing up. The "left" end has no marks.
I'm guessing it has something to do with water seeping underneath the finish? Maybe it's caused by glasses used without coasters, or from cleaning the tabletop? Or... any other ideas?
The main question is: what can I do now to fix these? I thought maybe I could gently sand these spots and reapply some water based poly... or perhaps I could do a gentle scuff sand and apply an oil based poly to the entire top surface - would that protect it better moving forward?
Thanks for any help!
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