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Anybody padded on water based poly?

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Forum topic by Loren posted 03-28-2014 12:07 AM 743 views 0 times favorited 7 replies Add to Favorites Watch
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Loren

8300 posts in 3109 days


03-28-2014 12:07 AM

When I first tried water based finishes on guitars I read the finish
could be padded on like shellac. I never tried it but I’m comfortable
padding shellac and I was wondering if it’s not worth the trouble
to try to get water based poly to do it.

I live in California and oil based finishes have become scarce. Otherwise
I’d mix up my own wiping varnish for this.


7 replies so far

View Monte Pittman's profile

Monte Pittman

21995 posts in 1799 days


#1 posted 03-28-2014 12:15 AM

Interesting. I never tried to thin it, but I would like to see your results if you do.

-- Mother Nature created it, I just assemble it.

View gfadvm's profile

gfadvm

14940 posts in 2151 days


#2 posted 03-28-2014 12:28 AM

I’m watching this thread! I’m a big fan of padding shellac.

-- " I'll try to be nicer, if you'll try to be smarter" gfadvm

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Monte Pittman

21995 posts in 1799 days


#3 posted 03-28-2014 09:02 AM

So Loren, are you thinking of doing it straight from the can, or thin it like a wipe on poly?

-- Mother Nature created it, I just assemble it.

View Purrmaster's profile

Purrmaster

914 posts in 1554 days


#4 posted 03-28-2014 09:05 AM

Be careful about thinning it. From what I’ve read you can thin water base a little (with water) but not very much. Whereas you can thin oil base poly with mineral spirits almost as much as you like.

View upinflames's profile

upinflames

209 posts in 1623 days


#5 posted 03-28-2014 10:57 AM

You can thin WB poly as much as you like. If you mix it 75% water and 25% poly, you now have wood conditioner or “blotch control” instead of having to buy the stuff. Same thing for “wiping poly”, just thin down your WB or OB instead of buying all the crap people try to sell as wonder finish and such.

View Fred Hargis's profile

Fred Hargis

3932 posts in 1955 days


#6 posted 03-28-2014 11:19 AM

I don’t use much waterborne, but what I’ve read (Flexner, Jewitt) is pretty much what purrmaster said. The chemistry of waterborne finishes is quite a bit different than oil based, and thinning too much can be a problem. So at least test it before committing.

-- Our village hasn't lost it's idiot, he was elected to congress.

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Loren

8300 posts in 3109 days


#7 posted 03-30-2014 05:32 PM

I’m doing a test piece and the result is promising. I’m using
an oil-modified waterborne finish.

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