By:
Bruce
Kieffer
Photos: Bruce Kieffer
Posted: Nov.18.09
I was excited to
try this stuff when I first saw it on the internet. My reasons?
Well... since moving my shop to our home, I can no longer use
"stinky" finishes, plus I really like the smoothness of
wipe-on finishes, and I especially like the look of clear
water-based finishes on unstained wood. So this product seemed
perfect for me. I searched for it at my local home and hardware
stores, and I was surprised to find that no one carried it. I
checked with Minwax and they told me it was only sold retail in
California. That's because of the state's VOC emission
limit requirements. But not to worry, they quickly added that it
could be mail ordered. So that's what I did, and my testing
began!
Following the application directions, I tested on both
small and large pieces of wood, and I made some 90-degree corner
samples to test them since my experience tells me I need to know
how to apply a new finish to an inside corner. When I was done, I
concluded the finish's pros were: Very little odor, no concerns
of spontaneous combustion, fast drying, recoat in 2 to 3 hours,
water cleanup, and the resulting finish has a very delicate satin
smooth appearance with great water resistance and durability.
OK, now for the downsides: It dries very fast (yes, this is
good and bad), so you must get a coat on quickly, thin and even.
That can be challenging as your surfaces get larger and/or more
complex. It raises the wood grain, which is common with water-based
finishes, but that is manageable and lessens as you add successive
coats of finish. And finally, achieving success requires A LOT of
practice. In other words, there's a large learning curve, so
practice on scrap wood, and start by applying it to smaller flat
surfaced projects. Always disassemble your project as much as
possible before applying any finish, and a good rule to follow is
to never commit an unfamiliar finish to your project. That is a
recipe for disaster. With all of that said, the results are well
worth the effort. This stuff looks great when applied right, and a
finish can be built and completed much faster than with oil-based
finishes, which typically have a longer dry time between
coats.
Application Tips
for This Product
Tools you'll need
Application:
Work light, foam brush, 12"
x 12" lint free rag, finishing gloves, squirt bottle, small
plastic container.
Between Coats:An orbital sander with a 220 grit disc, and 220 and 320
grit sandpaper for raised grain, a chisel and 180 grit hard sanding
block for runs, a fine grit sanding sponge and maroon Scotch-Brite
pad for smoothing.
Final Touch
Ups:Gray and white Scotch-Brite pads and automobile polishing
compound.
After extensive testing and
practice, it was time for me to make the leap and finish two
medicine cabinets I had just built. Doing so gave me a chance to
learn even more. Here are the finishing steps and techniques I
found worked best for me: I applied the first coat using a foam
brush. That allowed me to go quickly and apply a relatively even
thin coat. I was very careful on the inside corners to make sure no
finish pooled there, and so minimal finish was applied to the
tangent surface. Much care needs to be taken when applying the
finish on and near edges. THIN is the key. In fact you can build
thin coats on top of thin coats as soon as the first coat is dry. I
found that method much more successful than trying to smooth out a
thick coat. I would at times apply the finish to
"sensitive" areas, stop, go work on another piece, then
come back and finish the broader surface between the already
finished areas. If the overlays are very thin, they hardly show.
Also, excessive wiping causes more problems than dealing with a
dried run, but you can wipe off a wet run once the surrounding
finish has flashed over (first stage of dry). Keep that in
mind.
After a few hours the first coat
was dry, very rough, and ready to smooth. I gave it a quick once
over with an orbital sander and a 220-grit disc. I removed any runs
with a chisel and 180-grit hard sanding block. I continued sanding
by hand with 220-grit sandpaper. Next I smoothed the finish with a
fine grit sanding sponge, and then a maroon (fine grit)
Scotch-Brite pad. Then I applied the second coat, again using the
foam brush.
The dried second coat was much
smoother than the first. I sanded it more gently by hand using 320
sandpaper, and then the maroon Scotch-Brite pad. I made sure all
imperfections were removed since I was preparing to apply the final
coat. I applied the third coat using a 12" x 12" lint
free rag. I saturated the rag with finish and wrung out the excess.
I washed my gloves because I learned earlier that dried finish on
my gloves would flake off and land in the wet finish. Not good! I
kept the rag loaded evenly with finish by squirting more finish on
it often. I third coated the inside corners first, let them dry,
and then I applied the third coat very carefully to the rest using
long with-the-grain strokes.
Even with all the care I took applying the finish, there
still was a bit of unevenness on my rather complex door frames (see
the photo). I smoothed problem areas gently with a gray (ultra
fine) Scotch-Brite pad, then brought the sheen up with polishing
compound, and then back down again with a white (light duty)
Scotch-Brite pad.
Product
information:
Minwax Water Based Wipe-On Poly
800-523-9299
Ordering Information:
Minwax Water Based Wipe-On
Poly
Mail order from Ace Hotline
800-441-4223
Scotch-Brite Pads and Sanding Sponges
Woodworker's
Hardware
800-383-0130