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How to store finish

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Forum topic by Eric posted 791 days ago 1116 views 0 times favorited 21 replies Add to Favorites Watch
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Eric

185 posts in 1115 days


791 days ago

Topic tags/keywords: spar finish dry storage store

Recently I’ve been using Spar finish. On the second use from can #1 I noticed some clumps. I returned the can thinking it was a dud.

The same thing happened with can #2. After using most of the can (leaving a considerable amount of air space in the can), I checked the can after about one week of sit time. Sure enough the remaining finish had a dried membrane on top.

Yes I sealed the can lid with a mallet each time.

Is spar finsih susceptible to this? How do you fight against it?

-- Eric


21 replies so far

View a1Jim's profile

a1Jim

112001 posts in 2180 days


#1 posted 791 days ago

Usually finishes say to store them in a cool dry place. the other thing I do is buy my material in quart containers even though they cost more than gallons but last longer. There’s also a product that you spray in the can just before closing the can that replaces the air that helps preserve the finish.

-- http://artisticwoodstudio.com Custom furniture

View gfadvm's profile (online now)

gfadvm

10599 posts in 1293 days


#2 posted 791 days ago

I have the same problem with Spar Urethane. I have even poured it into glass jars, filling them to eliminate air space and a few weeks later it has turned to gel/goo. The Bloxygen Jim cited works pretty well but is pricey and I hate paying for something that feels like an empty spray can!

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

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patron

12976 posts in 1944 days


#3 posted 791 days ago

try this

http://www.rockler.com/product.cfm?page=1396

more here

http://lumberjocks.com/topics/4001

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

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Loren

7269 posts in 2251 days


#4 posted 791 days ago

exhale into the can and then seal it fast.

-- http://lawoodworking.com

View Sarit's profile

Sarit

466 posts in 1743 days


#5 posted 791 days ago

I think you can put some plastic wrap directly on the surface of the liquid making sure there are no air bubbles.

View Fuzzy's profile

Fuzzy

289 posts in 2592 days


#6 posted 791 days ago

I place the UNLIT tip of a Propane Torch into the container and open the valve for several seconds … Propane is heavier than air, so it will displace it. Much cheaper than commercial blockers, and it seems to work. OTOH … exhaling into the can is even more economical, so if it works … why not ???

I’ve also heard of placing discs of Saran Wrap or waxed paper on the surface, but have you to try it … sounds like it should work … ANYTHING to keep Oxygen from contact with the finish.

BE SURE to never return finish to the container that has been out in the open … it will cause the exact same effect.

-- - dabbling in sarcasm is foolish … if you’re not proficient at it, you end up looking stupid … ... ...

View KarenW's profile

KarenW

123 posts in 791 days


#7 posted 790 days ago

I also exhale a big breath into the can and seal it quick. Never had anything skim over when I do that.

-- Happiness does not come from doing easy work but from the afterglow of satisfaction that comes after the achievement of a difficult task that demanded our best. --Theodore I. Rubin

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Eric

185 posts in 1115 days


#8 posted 790 days ago

Wow. Thanks everyone. I just bought my next quart of spar today. I think I will try the exhale method first. You can’t beat the price!

-- Eric

View fredf's profile

fredf

495 posts in 2313 days


#9 posted 789 days ago

I’ve tried dustoff (canned air for cleaning computers) (which is r134 in most cases). it seems to work ok too, although haven’t and a lot of experience with it.

-- Fred, Springfield, Ma

View thedude50's profile

thedude50

3503 posts in 1081 days


#10 posted 788 days ago

I too use my propane torch to preserve the spar varnish sorry I forgot to tell you to do this eric My buts the product jim recommends is inert and not flammable therefore it is the preferred method to preserve the stuff. I hardly ever have a can for more than a few days. I always buy the smaller containers to be sure they stay fresh I have never tried exhaling but if that works I would stick with that it is cheep. you know these guys should tell you to buy beloxigen when they sell you a gallon of spar varnish.

-- when I am not on Lumberjocks I am on @ http://thisoldworkshop.com where we allow free speech

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Grandpa

3054 posts in 1279 days


#11 posted 788 days ago

Anyone ever try mixing vinegar and soda in a pitcher then pouring the gas (not the liquid) into the container and placing the lid on it? I saw where a guy got money for this suggestion but have never tried it myself. Just wondering.

View fredf's profile

fredf

495 posts in 2313 days


#12 posted 788 days ago

Grandpa—that should work even better than exhaling into the can, pure co2! If co2 works ok a co2 cylinder with regulator would make it really easy too.

-- Fred, Springfield, Ma

View RussellAP's profile

RussellAP

2938 posts in 890 days


#13 posted 787 days ago

I use Rustolium quart size ultimate spar, and never had this problem. In fact I’ll pour what I don’t use in my sprayer back in the can and still no problem. And yes I use a filter.

-- A positive attitude will take you much further than positive thinking ever will.

View UncleStumpy's profile

UncleStumpy

368 posts in 916 days


#14 posted 787 days ago

Guys, just store the container upside down. The skin will form on the bottom where there is air.
Sometimes opening up the can the next time might be a little tougher but, no skin.

-- "They don't want it perfect - they want it SPECIAL"

View Clint Searl's profile

Clint Searl

1395 posts in 965 days


#15 posted 787 days ago

Oil based finishes can be stored in the freezer to retard polymerization.

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

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