Poly question

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Forum topic by RandyMarine posted 11-26-2010 07:37 PM 837 views 0 times favorited 9 replies Add to Favorites Watch
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236 posts in 2792 days

11-26-2010 07:37 PM

Topic tags/keywords: question

Can I poly over danish oil? I figured it would be good fpr pretection…but have no idea how to accomplish this or even if it is a good practice…

I am finishing a memorial flag box and I don’t want to screw it up! It will be hanging on a wall in my friends home.

Any input or information would be great, Thank you.

-- Semper Fi, Randy Sr.

9 replies so far

View therookie's profile


887 posts in 2250 days

#1 posted 11-26-2010 07:52 PM

I tryed it and it does not come out super nice. I suggest some spray lacquer.


View GaryL's profile


1094 posts in 2253 days

#2 posted 11-26-2010 08:00 PM

I think a safe bet would be to do a “primer” of shellac then use your poly of choice. Shellac will stick to almost anything and almost anything will adhere to shellac.

Edit: Sand with 320 and tack between coats

-- Gary; Marysville, MI...Involve your children in your projects as much as possible, the return is priceless.

View therookie's profile


887 posts in 2250 days

#3 posted 11-26-2010 08:02 PM

Yeah that sounds reasonable, it all depends on the look you are goin for


View JJohnston's profile


1614 posts in 2714 days

#4 posted 11-26-2010 08:03 PM

Danish oil is actually just an oil/varnish blend. If you want to topcoat with straight varnish, make sure it’s compatible with the varnish part of the Danish oil. You may be able to determine the chemistry of the DO with some internet searching.

In the future, if you want the same finish, just go with plain oil first (like boiled linseed oil), then varnish.

And by the way: ask yourself whether you really need the protection on something like a flag box, that’s probably not going to be handled very often.

-- "A man may conduct himself well in both adversity and good fortune, but if you want to test his character, give him power." - Abraham Lincoln

View Scott Bryan's profile

Scott Bryan

27251 posts in 3244 days

#5 posted 11-26-2010 08:33 PM

Yes, you can apply poly directly over danish oil. You just need to give the danish time to cure before applying the poly. For example, the Watco brand contains raw linseed oil and vegetable oil in an alkyd resin and,essentially, mineral spirits blend. The vegetable oil will never cure so there really isn’t anything that you can do about this being in the product but the raw linseed oil will eventually (about 30 days) cure. Once the linseed oil cures you should be able to successfully apply a topcoat of poly over it.

-- Challenges are what make life interesting; overcoming them is what makes life meaningful- Joshua Marine

View TheOldTimer's profile


226 posts in 2509 days

#6 posted 11-26-2010 08:38 PM

As stated above, dewaxed shellac.

-- TheOldTimer,Chandler Arizona

View CharlieM1958's profile


16229 posts in 3641 days

#7 posted 11-26-2010 08:50 PM

What Scott Bryan said.

-- Charlie M. "Woodworking - patience = firewood"

View RandyMarine's profile


236 posts in 2792 days

#8 posted 11-26-2010 09:02 PM

Good Info…I am scared of shellac. Never used it or seen it used and video content just can’t give me enough confidence. As time is an issue I guess, I will just apply a few good coats of Danish Oil and call it a day.

Scott, thanks so much…I have a hard time interpreting some of the info I have read…I am such a newbie…

-- Semper Fi, Randy Sr.

View TheDane's profile


4939 posts in 3086 days

#9 posted 11-26-2010 09:13 PM

FWIW, shellac is easy. You just need to do some reading to understand the cut you need and make sure you are getting de-waxed flakes.

I routinely use Mixwax poly on Watco brand Danish Oil … just make sure you let the DO cure.

If the DO isn’t completely cured, little beads will pop through the poly (don’t ask me how I know). If that happens, wipe with a clean, lint-free cloth and let it cure a little longer.

I normally let it cure for 7-days, but that can vary depending on temperature, humidity, and moisture content of the stock.

Should mention … I wipe-on the poly … I don’t brush, and don’t have (for the moment) a sprayer.

-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"

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