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Poly even coat on coffee table

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Forum topic by Abn101mp posted 12-12-2016 09:24 PM 409 views 0 times favorited 4 replies Add to Favorites Watch
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Abn101mp

51 posts in 431 days


12-12-2016 09:24 PM

I’m polyurethaning a coffee table top. Looking for advice on the best way to get an even coat. I have applied the first coat and will be sanding tomorrow with 1200 grit. The customer will be putting a glass top on it so I’m not sure how much time I should really invest in making this as smooth for example, as book cases or jewelry boxes.
I am using minwax semi gloss poly.
Thanks for any suggestions.

-- Dan,Mid-Maine


4 replies so far

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crippledcarpenter

26 posts in 2285 days


#1 posted 12-13-2016 01:36 AM

check the product label or call the 800 number and see if the product is able to be wiped on. if yes, this is the best way to control application of most finishing products. spraying the finish is the only way to trump wipe on. as to the 1200 grit sand paper, I would lean toward using steel wool or 3M scuffing pads. you don’t really want to sand per say more to the effect of knocking the high points off the first and second coats of finish. very lite. wipe with a clean dry tee shirt material. I don’t like tack clothes . they can leave wax on the finish and can cause fish eyes in the next coat.
if you do like using a brush or foam applicator, just apply nice thin coats. 3 should produce a beautiful finish you are hoping for.

-- haste makes firewood.

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RogerM

786 posts in 2237 days


#2 posted 12-13-2016 01:46 AM

Minwax Polyurethane works just fine when wiping it on. Dilute it with an equal part of mineral spirits then wipe it on with a lint free cloth (I use an old Tee shirt). Wait at least two hours for an additional coat or two. Let cure overnight then rub it out with your 1200 grit sandpaper. After rubbing it out put on a coat of finishing wax with 0000 steel wool and buff.

-- Roger M, Aiken, SC

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MrUnix

6010 posts in 2037 days


#3 posted 12-13-2016 03:45 AM

If you can’t spray it, make your own wipe on polyurethane. No need to go out and buy ‘wipe on’ specific crap, as that is just regular poly mixed with mineral spirits, and you pay extra for having them do the mixing. It’s almost foolproof. I am not sure if I agree with Roger about the application process he suggests, particularly about waiting two hours between coats, but you will come to develop your own technique that will work for you. I would also use gloss instead of semi-gloss, as it doesn’t contain the flattening agents that need to be kept mixed before application. If you want a semi-gloss, you can either lay it down as your final coat over the gloss coats, or do something like what Roger suggests using steel wool, fine grit sandpaper, crumpled paper or whatever… wax is optional and gives it a slightly different look and feel as well.

Just for reference, if you check the MSDS of the Minwax wipe on polyurethane, you will see that it’s 70% mineral spirits (CAS #64742-88-7 which they call a Medium Aliphatic Hydrocarbon Solvent), and is even a thinner mix than most people use when making their own – typically about a 50/50 mix.

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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Redoak49

2904 posts in 1827 days


#4 posted 12-13-2016 11:54 AM

The Minwax wipe on poly works great for things like you are doing.

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