I've used this produce before without problems, but it "might" be some kind
of reaction with the wood.
The wood was purchased at a farm sale in a batch of other hard woods that
could have been over 30 years old. Some mahogany and what I thought was teak
but I can't imagine what the heck happened.
Maybe return the can to the store and try another batch.
Could there be moisture in the sample wood???
P D Q
A few possibilities are:
- Moisture in material. I guess unlikely if this was the first time it
was ever opened.
- Shelf life problem and something went bad in the can.
- High moisture content in the wood.
I am not familiar with this product. Is it water based? If it is oil
based, maybe try thinning it with some mineral spirits to maybe
increase the open time to let the moisture escape. If water based, is
there a thinner you can use, maybe flowtrol or something? Also, is
this semi-gloss or satin? Those sheen killers are just white paint
pigment so maybe somehow it got out of balance and you got all of it
in one coat.
A few possibilities are:
- Moisture in material. I guess unlikely if this was the first time it
was ever opened.
- Shelf life problem and something went bad in the can.
- High moisture content in the wood.
I am not familiar with this product. Is it water based? If it is oil
based, maybe try thinning it with some mineral spirits to maybe
increase the open time to let the moisture escape. If water based, is
there a thinner you can use, maybe flowtrol or something? Also, is
this semi-gloss or satin? Those sheen killers are just white paint
pigment so maybe somehow it got out of balance and you got all of it
in one coat.
Oil based, satin. It's a quart can.
Now that I think about it, while I stirred the can to mix the bottom layer
for a while I looked at the lid and noticed it had the white soapy color, so
then I touched the white with the foam brush first to see what it would do.
Some of the white was already soaked in the brush when I dipped it in the
main can.
I ended up sanding the white off and trying something else. Now I'll take
more time mixing, I didn't know that the sheen killers were white pigment.
P D Q
-----------------------------------------------
Doubt it, it's been very dry around here this winter. Wood stored on high
rack in garage.
Test piece was sanded as usual along the grain. Wood does "feel" moist or
greasy to touch.
It might be that I'm not that experienced with tropical wood.
Tested another piece with mineral oil and it really looks good so I'll skip
the poly.
I had the exact same thing happen to me when finishing three computer
desks. My first coat went fine but it "fogged" white during the second
coat. Even though it was temperate and dry inside, the temperature and
humidity outside was high and apparently some of the moisture seeped
into the poly. I ended up dipping the desktops to remove the poly and
recoating a week later and they came out fine.
`Casper
As usual, Sr. Sonoma is on his game. FWIW, I agree.
> I ended up sanding the white off and trying something else. Now I'll take
> more time mixing, I didn't know that the sheen killers were white pigment.
Actually, the shine killers that break the reflectivity are usually
some type of silica, flat ground to the manufacturer's specs.
These will easily collect on the bottom of the can if the material is
old, or in my experience, been exposed to a lot of different temp
changes. (For example, here we have had some days lately where the
overnight temp was 35 - 40 degrees different from the day temps).
Do yourself a favor. Go to the hardware store and buy yourself a
paint stirring gizmo with the spiral configuration on the end. Put
that on the end of your drill and stir your material, no matter what
it is, for at least three minutes in a quart sized can. More for a
gallon, even more for a five gallon.
Don't whip any air into your material when you are stirring. Air will
make bubble in your finish, even after application. A low mix speed
works fine. When the semi gloss, satin clear coat is properly mixed
it will look like clear amber in the can. Some clear flats look a bit
cloudy, but consistent. Never white.
Robert
Actually, the shine killers that break the reflectivity are usually
some type of silica, flat ground to the manufacturer's specs.
These will easily collect on the bottom of the can if the material is
old, or in my experience, been exposed to a lot of different temp
changes. (For example, here we have had some days lately where the
overnight temp was 35 - 40 degrees different from the day temps).
Do yourself a favor. Go to the hardware store and buy yourself a
paint stirring gizmo with the spiral configuration on the end. Put
that on the end of your drill and stir your material, no matter what
it is, for at least three minutes in a quart sized can. More for a
gallon, even more for a five gallon.
Don't whip any air into your material when you are stirring. Air will
make bubble in your finish, even after application. A low mix speed
works fine. When the semi gloss, satin clear coat is properly mixed
it will look like clear amber in the can. Some clear flats look a bit
cloudy, but consistent. Never white.
Robert
Excellent !! I do have a paint mixer bit, but it seemed aggressive for a
quart of poly.
My work area is a partially heated enclosed porch, the temp was lower than
RT.
My poly experience had been with "gloss" or "stain" and used right after
purchase.
Now I'm confident that poor mixing was my problem. Thanks for responding.