In article ,
says...
Should I keep putting on 4th, 5th, ? coats until
it looks like the grain is filled in better?



You would have been better off filling the with a filler or several
coats of thinned and sanded back coats of your finish. Now you don't
have much choice but to plow forward adding coats.

The only real way you are going to accomplish the task without adding
three, four, five, or six more coats is to sand what you have now all
the way down to where it is flat, note, not to the wood, just so it is
level, and add another coat or two on the sanded flat surface.


--
MikeG
Heirloom Woods
www.heirloom-woods.net