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View trainman2k's profile

Polyurethane storage

by trainman2k
posted 07-26-2017 05:36 PM


22 replies so far

View Rich's profile

Rich

4494 posts in 985 days


#1 posted 07-26-2017 06:19 PM

I use Bloxygen. It’s compressed argon gas in a can. Argon is inert and heavier than atmospheric gasses, so it lays down on the surface of the liquid in the can and prevents contact with oxygen. A $12 can treats a quart can 75 to 100 times after opening.

Don’t let anyone tell you to store it upside down. That’s a myth.

-- Knowledge is not skill. Knowledge plus ten thousand times is skill. -- Shinichi Suzuki

View Loren's profile

Loren

10477 posts in 4043 days


#2 posted 07-26-2017 06:23 PM

I’m sure Bloxygen is the best way to
go about it. You can also transfer
the finish to smaller jars so there’s less
room for air in there.

View trainman2k's profile

trainman2k

11 posts in 758 days


#3 posted 07-26-2017 06:27 PM

Thanks, Rich!
That sounds like the perfect solution.

Since it’s a “heavier than oxygen” gas, I presume that when you re-open the can of finish, just a light wafting of air over the opened can would dissipate the layer of Bloxygen. Then when done, just add another new ‘layer’ and seal the can. Am I thinking correctly on this?

-- Hell hath no furry like that of a man with a missing woodworking tool

View trainman2k's profile

trainman2k

11 posts in 758 days


#4 posted 07-26-2017 06:34 PM

Loren, I truly thank you for your idea, but I did that. :(
When I opened the smaller container, that’s when I found a gelled glob of urethane. Tried thinning it with Mineral Spirits – had some success but I know from experience that when you thin anything, the finish and characteristics don’t always remain the same.

-- Hell hath no furry like that of a man with a missing woodworking tool

View Rich's profile

Rich

4494 posts in 985 days


#5 posted 07-26-2017 06:49 PM



Thanks, Rich!
That sounds like the perfect solution.

Since it s a “heavier than oxygen” gas, I presume that when you re-open the can of finish, just a light wafting of air over the opened can would dissipate the layer of Bloxygen. Then when done, just add another new layer and seal the can. Am I thinking correctly on this?

- trainman2k

It’s inert, trainman, so just use the finish like you would if it was a fresh can. And yeah, use it every time you close the can back up. It includes two of the red tubes that fit in the spray head, so just lay the lid back on the can with the tube poking in, give it a second or two spray, slip the tube out and seal the lid. It doesn’t have to fully displace the air in the can — just enough to cover the surface of the finish.

Getting two tubes is a bonus too. I’m always losing those things :)

-- Knowledge is not skill. Knowledge plus ten thousand times is skill. -- Shinichi Suzuki

View CharlesA's profile

CharlesA

3383 posts in 2193 days


#6 posted 07-26-2017 07:03 PM

This is another solution. Isn’t perfect, but works well for me: http://www.stoplossbags.com/

-- "Man is the only animal which devours his own, for I can apply no milder term to the general prey of the rich on the poor." ~Thomas Jefferson

View Carloz's profile

Carloz

1147 posts in 987 days


#7 posted 07-26-2017 07:30 PM

Close the lid and turn the jar upside down for a moment.

View Rich's profile

Rich

4494 posts in 985 days


#8 posted 07-26-2017 07:55 PM


Close the lid and turn the jar upside down for a moment.

- Carloz

Do you have to say any magical incantations? What purpose could possibly be served by doing that?

-- Knowledge is not skill. Knowledge plus ten thousand times is skill. -- Shinichi Suzuki

View Kazooman's profile

Kazooman

1319 posts in 2348 days


#9 posted 07-26-2017 07:58 PM

This was discussed back in March.

http://lumberjocks.com/topics/209730

View trainman2k's profile

trainman2k

11 posts in 758 days


#10 posted 07-27-2017 06:30 AM

Thanks to all! I do appreciate the help.

I searched for a topic/blog on this before starting this one and apparently I never hit the correct phrase because I found nothing. The link “Kazooman” supplied should have shown up, but for some reason, did not.

I just ordered a can of Bloxygen so will soon try it out.

I like the “StopLossBag” idea as well. Might give them a try soon and do my own in shop comparison between the two.

Thanks again to all who responded!

-- Hell hath no furry like that of a man with a missing woodworking tool

View wncguy's profile

wncguy

442 posts in 2708 days


#11 posted 07-27-2017 02:44 PM

I use Arm-R-Seal & had issues with getting heavy skim in can after using. Short story I was doing a lot of things wrong including working out of the can. Went to local woodworking shop & they suggested Bloxygen but did not have any in stock.

Do not recall how (think it was on LJ but not sure), but found info that compressed air cans for electronics, etc had either the same ingredient or similar & heavier than oxygen & would work same. So bought a can (Ultra Duster) from WalMart & found it worked & a lot cheaper.

Just bought some more (4 10 oz cans of Dust Off) for something like $14 – should last me forever & have other uses too.

Can of Ultra Duster says it contains 1,1-difluorethane )HFC-152a). CAS#75-37-6.

-- Any man can be a father, but it takes someone special to be a Dad

View fuigb's profile

fuigb

559 posts in 3353 days


#12 posted 07-27-2017 04:08 PM

I use a tip that came around in one of the off-line woodworking magazines: a plastic pop bottle. Like the stop-loss bag noted above one simply fills the bottle and then mashes the bottle to a point where only a minimal amount of air is left in the bottle. If you’re not in the part of the country where they drink pop then a plastic soda bottle might serve as an acceptable substitute. :)

-- - Crud. Go tell your mother that I need a Band-aid.

View Carloz's profile

Carloz

1147 posts in 987 days


#13 posted 07-27-2017 06:48 PM


Close the lid and turn the jar upside down for a moment.
- Carloz
Do you have to say any magical incantations? What purpose could possibly be served by doing that?
- RichTaylor

The polyurethane ( or whatever is in the jar will seal all gaps and crevices between the jar and the lid) But sure saying something like “Oo ee oo ah ah ting tang walla walla bing bang” does not hurt.

View Rich's profile

Rich

4494 posts in 985 days


#14 posted 07-27-2017 06:57 PM


Close the lid and turn the jar upside down for a moment.
- Carloz
Do you have to say any magical incantations? What purpose could possibly be served by doing that?
- RichTaylor

The polyurethane ( or whatever is in the jar will seal all gaps and crevices between the jar and the lid) But sure saying something like “Oo ee oo ah ah ting tang walla walla bing bang” does not hurt.

- Carloz

Yeah, but you still have the oxygen in that space. That’s the thing that’s causing the thickening and skin formation. Same thing with the storing upside down I mentioned in my first reply here. Sure, the skin will be on the bottom when you invert it, but the overall damage to the finish will still have occurred.

Now, if you throw in some Love Potion Number 9 — totally different story.

-- Knowledge is not skill. Knowledge plus ten thousand times is skill. -- Shinichi Suzuki

View Carloz's profile

Carloz

1147 posts in 987 days


#15 posted 07-27-2017 07:05 PM

Yeah, but you still have the oxygen in that space. That s the thing that s causing the thickening and skin formation. Same thing with the storing upside down I mentioned in my first reply here. Sure, the skin will be on the bottom when you invert it, but the overall damage to the finish will still have occurred.

Now, if you throw in some Love Potion Number 9 — totally different story.

- RichTaylor

There really is not enough air in a sealed jar to cause any degradation of the content. I used to store all kind of finishes polyurethane including that way for many years and yet to see any degradation in the product.

View Gone's profile

Gone

2604 posts in 2240 days


#16 posted 07-27-2017 09:09 PM



I use a tip that came around in one of the off-line woodworking magazines: a plastic pop bottle. Like the stop-loss bag noted above one simply fills the bottle and then mashes the bottle to a point where only a minimal amount of air is left in the bottle. If you re not in the part of the country where they drink pop then a plastic soda bottle might serve as an acceptable substitute. :)

- fuigb


I do that for traveling, fill it a little shy of the top then squeeze out the air. That way, if the liquid does expand it fills the container, a full container would leak. Never thought of using the same technique for finish.

I do use Tupperware and “burp” it to remove some of the air in between coats of Arm-R-Seal.

View jonah's profile

jonah

2075 posts in 3694 days


#17 posted 07-27-2017 09:44 PM

I buy small quantities of finish for exactly this reason. Sure, it’s more expensive, but what use is buying a quart, using 1/3rd of it, and then having to throw out the other 2/3rds two years from now?

I’ll have to try Bloxygen at some point.

View becikeja's profile

becikeja

992 posts in 3208 days


#18 posted 07-29-2017 12:36 PM

How long are you trying to store it? I have stored Arm-R-Seal for 12 months with no issues, and for 3 weeks with issues. The difference was I forgot to wipe the rim prior to sealing on the 3 week one that went bad.

When done using the can, take a rag and make sure the rim and the top is completely dry and free of all liquid. Then put the top on.

-- Don't outsmart your common sense

View Redoak49's profile

Redoak49

4007 posts in 2384 days


#19 posted 07-29-2017 12:45 PM

I store poly with no problems. But, I make certain the rim is clean and lid seals tight. I also use a finish nail to make small holes in the rim to help drain any finish caught there.

View TheFridge's profile

TheFridge

10858 posts in 1881 days


#20 posted 07-29-2017 01:16 PM



I store poly with no problems. But, I make certain the rim is clean and lid seals tight. I also use a finish nail to make small holes in the rim to help drain any finish caught there.

- Redoak49

Good idea

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View splintergroup's profile

splintergroup

2697 posts in 1618 days


#21 posted 07-29-2017 01:48 PM

“Cheap” tricks also include a layer of saran wrap placed on top of the liquid or a clean “box-o-wine” bag as a substitute for the stop loss bag.

Personally I just give a squirt of CO2 gas from my MIG welder.

View trainman2k's profile

trainman2k

11 posts in 758 days


#22 posted 07-30-2017 10:08 PM

My poly was stored for about 2 months and when opened, was severely gelled.
Yesterday, I received the can of Bloxygen I had ordered so will be testing it out.

Thanks to all for the great responses and ideas

-- Hell hath no furry like that of a man with a missing woodworking tool

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