On Dec 18, 7:50 pm, Sasha wrote:
What's the difference between oil based and water based polyurethane?
Water based poly has lower odor and dries faster. If oil based poly
does not have any advantages over water based this makes water based
poly a clear choice. Maybe there are finishes that water based poly
cannot be used on or is not recommended?

The same question applies to water based and oil based stains.

Besides the obvious of the grain raising with water base poly is the
ambering. Oil base poly ambers while waterbase stays relatively clear.
Not a problem with dark woods but a big problem with light colored
woods like maple and holly if you want to maintain their light color.
Bob
http://www.outofcontrol-woodturning.com