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BLO in Seal-A-Cell

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Forum topic by jonsprague0000 posted 08-15-2014 06:21 PM 545 views 0 times favorited 9 replies Add to Favorites Watch
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jonsprague0000

51 posts in 344 days


08-15-2014 06:21 PM

Topic tags/keywords: finish blo boiled linseed oil oil linseed arm-r-seal seal-a-cell shellac cherry curly cherry

I am finishing a solid Cherry dining room table and am considering mixing boiled linseed oil into seal-a-cell as the first coat. The reason for this would be to add in some oil to help pop the grain, but not enough to cause blotching. After looking at the MD5 sheet I don’t think there is any oil in seal-a-cell.

Does anyone have an opinion on this approach or any concerns? Also would anyone recommend a washcoat of shellac before?


9 replies so far

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bondogaposis

2767 posts in 1106 days


#1 posted 08-15-2014 07:10 PM

Seal a Cell is a sealer. It’s purpose is to prevent blotching. As cherry is prone to blotching, it would be safer to apply BLO as a second coat after the seal a cell has cured. As always do your experimenting on some scraps before you commit to a finishing schedule on your project.

-- Bondo Gaposis

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crank49

3524 posts in 1726 days


#2 posted 08-16-2014 03:07 AM

Maybe I’m just un-informed, but I always felt like BLO was designed to add to other products to modify their behavior. My dad added it to paint to make it flow better, for instance.
Since I don’t know any better, I would mix up my finishes and try it out on a piece of scrap and see what happens.
Worst that can happen is you turn a piece of scrap into . . . scrap.

-- Michael :-{| “If you tell a big enough lie and tell it frequently enough, it will be believed.” ― A H

View Wildwood's profile

Wildwood

1248 posts in 889 days


#3 posted 08-16-2014 11:54 AM

Seal-A-Cell mostly MS & some resin, BLO mostly resin, metal dryers & solvent. Adding BLO to Seal-A-Cell or applying later might end up with gummy mess. Might work like a charm too, if having a lucky day.

I would not add BLO before or after using Seal-A-Cell. Cherry wood darkens with age, so use Seal-A-Cell, or Shellac under whatever going to top coat the table.

-- Bill

View Clint Searl's profile

Clint Searl

1479 posts in 1116 days


#4 posted 08-16-2014 12:33 PM

BLO is not a resin; it’s a drying oil that’s only good for starting fires. But go ahead and add it, and turn your project to crap.

-- Clint Searl....Ya can no more do what ya don't know how than ya can git back from where ya ain't been

View Picklehead's profile

Picklehead

646 posts in 684 days


#5 posted 08-16-2014 01:26 PM

As the “church lady” would say, “well, isn’t that special”.

-- You've got to be smarter than the tree.

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jonsprague0000

51 posts in 344 days


#6 posted 08-16-2014 02:43 PM

I ended up making a mix of arm-r-seal, BLO, and mineral spirits for the first coat. The reason I added mineral spirits was so the first coat wouldn’t be so thick and could absorb deeply. It ended up looking great!

Clint, can you please expound on why you think BLO would make it look like crap?

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Clint Searl

1479 posts in 1116 days


#7 posted 08-17-2014 05:20 PM

If you’re happy, I’m happy; but it would have looked better without the BLO.

-- Clint Searl....Ya can no more do what ya don't know how than ya can git back from where ya ain't been

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Clint Searl

1479 posts in 1116 days


#8 posted 08-17-2014 07:19 PM

Jon, I owe you a better response. Your choice of arm-r-seal to finish your project with is good. It’s probably more respected than Minwax poly among serious woodworkers. I think we rightly have to assume that General Finishes does extensive testing on the product to assure that it performs up to the demands of users without having to add anything to it. I wouldn’t be surprised to learn that it already contains some linseed oil, which is commonly used in many resin finishes, but to add more once the can is opened doesn’t make sense to me. It doesn’t improve any of the properties of the finish, and likely degrades the finish by effectively reducing the percentage of urethane, the most important component, in the final film.

Next time, go with straight or slightly thinned Arm-R-Seal, and judge for yourself. Home brews are silly affectations. BLO is the most inferior finish product.

-- Clint Searl....Ya can no more do what ya don't know how than ya can git back from where ya ain't been

View Charlie's profile

Charlie

1068 posts in 1041 days


#9 posted 08-17-2014 08:20 PM

I use BLO on my wheel barrow wood parts and some metal stuff that stays outside :) Like…. farm implements. Keeps ‘em from rusting all to hell.

I’m not a finishing guru, and a lot of what I do involves using simple finishes (some would call them retro finishes :) ) as I often make flutes or other items that come in contact with a mouth (toys too) or even food. So I use a lot of milk paint, shellac, tung oil, and citrus solvent.

Oh, I still have the other stuff like laquers, and varnishes and such, and the appropriate solvents for them, but I tend to use them less just because of what I build.

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