So, as another suggested, you may have the porous oak blowing bubbles from
below. Put the magnifier to it to see if the pinholes have a pore below
'em?.

"Bay Area Dave" wrote in message
m...
Yes, George, the symptom is NOT like entrapped air which is what I get
if I brush unthinned poly.

dave

George wrote:

It would seem to me that atomization would free any entrapped air.