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SealCoat streaks

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Forum topic by Matt Przybylski posted 332 days ago 616 views 0 times favorited 7 replies Add to Favorites Watch
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Matt Przybylski

433 posts in 982 days


332 days ago

Topic tags/keywords: stain marks streaks sealcoat

So I was sealing in some gel stain yesterday on red oak and I brushed on Zinsser SealCoat. The stuff dries extremely fast and as I was brushing it, it would dry in one spot before I could blend it. Today I see there is some overlap marks that stick up in some spots. What’s the best course of action now to even this out? I want to get the overlap marks out before I spray on enduro var by GF. Should I lightly sand with something like 320? I want to make sure I don’t lift up the color. After sanding should I wipe the dust off with mineral spirits or something else?

Appreciate any help offered.

-- Matt, Illinois, http://www.reintroducing.com


7 replies so far

View Jimbo4's profile

Jimbo4

1124 posts in 1367 days


#1 posted 332 days ago

I have the same problem with turnings, trying to keep a wet edge is not happening. I even tried rubbing out with lots of DNA – didn’t work. I don’t use it anymore, only Deft Sealant, which does not streak.

-- BELT SANDER: Used for making rectangular gouges in wood.

View NiteWalker's profile

NiteWalker

2709 posts in 1181 days


#2 posted 332 days ago

I usually lightly sand with 320.
It works fine.

-- He who dies with the most tools... dies with the emptiest wallet.

View Matt Przybylski's profile

Matt Przybylski

433 posts in 982 days


#3 posted 332 days ago

I sanded lightly with 320 on a test piece I had and I basically went right through the shellac and even took down some color. I was sanding REALLY lightly too, so that scared me off and I’ve decided not to sand and hope that the enduro var evens everything out when I spray it on :/

-- Matt, Illinois, http://www.reintroducing.com

View JAAune's profile

JAAune

757 posts in 921 days


#4 posted 332 days ago

SealCoat comes in either a 2lb or 3lb cut. I don’t remember which. Regardless, it’s a lot easier to brush on if it’s thinned with about 50% denatured alcohol first. I prefer a synthetic brush with fine, flagged bristles and a chiseled tip.

Since it’s too late now for you to use proper technique for applying the shellac I recommend moving onto the topcoat as you said you planned to do. After a coat or two of Enduro you can scuff sand everything to level out minor defects prior to applying the final coat.

As a side note, is that Enduro the water-based product? If not, I’m not sure why you are spraying the varnish but didn’t use your spray gun to apply the shellac. It’s generally best to spray the sealer over the stain whenever possible to minimize the chance of the stain getting moved around by the brush-strokes.

-- See my work at http://remmertstudios.com and http://altaredesign.com

View Finisherman's profile

Finisherman

190 posts in 453 days


#5 posted 332 days ago

I strongly recommend that you don’t try to spray another coat of finish over the shellac in hopes that it will even everything out. It rarely works that way. Rather, the defect will usually telegraph through your topcoat. Instead, use a single edged razor blade like a cabinet scraper to carefully level the ridges. Next, try thinning your shellac with anhydrous isopropyl alcohol, if you can find it. Try to apply your shellac in the cool of the evening or the early morning. Finally, as a last resort, you can try adding some lacquer retarder to your shellac to give you more open time. JAAune is right. Spraying your shellac is the best way to ensure an even coat.

View Clint Searl's profile

Clint Searl

1396 posts in 965 days


#6 posted 332 days ago

That’s what you get when you use a superfluous product, which shellac is.

-- Clint Searl.............We deserve what we tolerate

View Matt Przybylski's profile

Matt Przybylski

433 posts in 982 days


#7 posted 332 days ago

JAAune, I didn’t spray the shellac out of pure laziness. You see, it was just four panels and I figured I’d just brush it on quickly and then when I’m ready to apply shellac to all other parts I’d spray the rest, many more parts than just the door panels, so I could clean the gun then. However, as usual, when you try to take shortcuts you get burned and I did. Lesson learned :/

-- Matt, Illinois, http://www.reintroducing.com

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