Is there generally speaking places where i can take my 19"x19"x2" piece
of wood and get it planed? (not sure if that's the right terminology,
but you get the idea) I'm imagining some sort of woodshop/workshop
where you pay to use the machine/services. I live in San Diego, CA, USA
if that's helpful. I don't want to have to spend $2,000 or whatever to
get a 20" planer.
So, i'm working to build a table go board  that's basically
19"x19"x2". I started out with two pieces of basswood thatI i ran
through a friend's planer that's i'm guessing 13" wide? I joined the
pieces of wood together (using a biscut joiner), and sanded it and gave
it one or two coats of polyurethane.
I set aside the project as i had to move, and unfortunately during the
move the board got a nice ding in it. So, i'd like to shave off a part
of the board to make it level again. I need it pretty level so that i
can draw the lines on it - and also for perfectionist reasons.
I'm not sure if planers work well with wood that has a polyurethane
coating - or would i have to sand that off first? I also could just try
to sand it down evenly, but i'd rather have it properly flat rather
than eyeballing it.
Thanks in advance!
: much like the first picture here: