On Thursday, July 30, 2015 at 10:21:43 PM UTC-4, Mike Marlow wrote:
> DerbyDad03 wrote:
>
> >
> > That's probably true, but my schedule doesn't allow me to put the
> > second coat on 2-8 hours after the first. I get a few hours in the
> > shop in the evening, so it's typically multiples of 24 hours between
> > coats.
> >
>
> Not to worry - under those requirements, you did the right thing.
>
Frankly, I'm a little confused by the "less time, no sanding between coats"
method when it comes to WOP.
You guys, as well as folks in other forums, say that 2-3 coats of WOP can be
applied as soon as the previous coat is "dry to the touch". After that, the
common method seems to be to let those coats dry for 24 hours, then lightly
sand before doing another 2-3 "dry to the touch" coats. I understand the
reason behind this is that 2-3 coats of WOP is roughly equivalent to 1
coat of brush on poly.
My first bit of confusion comes from the fact that the Minwax can says to let
each coat dry 2-3 hours and then sand with 320 grit. In other words, sand
between each coat, even after only 2-3 hours. (More on this later.)
My second bit of confusion comes from fact that I'm not sure what "dry to the
touch" actually means. Let me explain, because this ties in with my confusion
regarding the Minwax instructions.
After 2-3 hours (and usually more) I find that the WOP is not what I would call
tacky, but it's definitely not completely dry. If I drag my fingers across the
surface they, well, they *drag*. It just doesn't feel like anything I would
want to sand, per the Minwax instructions. However, is that considered "dry to
the touch" in terms of being able to apply the next coat or is too soon? Should I wait until I feel no drag?
Can I wait 4-6 hours if that's what it takes for the drag to be gone? 8? In
other words, what's the tipping point between "It's OK to apply the next coat"
and "Oh crap, now you have to sand".
And why does Minwax say to sand between every coat in as little as 2-3 hours when the rest of world says you don't have to/shouldn't?