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Author Topic: What do I use to apply POLY? Help please!!  (Read 2390 times)

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javeryh

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What do I use to apply POLY? Help please!!
« on: August 20, 2005, 11:23:43 am »
I think I'm ready to put the first coat of poly on my cab - there are 2 coats of stain on there already and even though I can still see a little bit of the wood coloring in some spots I'm afraid a third coat of stain will make it so you can't see the grain at all. 

Anyway, how do I apply the poly?  A brush seems like it would leave streaks/brush marks and I'm not sure a roller could get into all of the corners and cover all the surfaces.  Can I cut up a cotton t-shirt and fold it into a square and use it to apply the poly?  Any suggestions would be great.  Please help!  THANKS!
« Last Edit: August 20, 2005, 01:59:32 pm by javeryh »

AceTKK

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Re: What do I use to apply POLY? Help please!!
« Reply #1 on: August 20, 2005, 02:09:10 pm »
I believe a piece of soft cloth / towell is the right way to go.  There are many different kinds of poly though, so follow the directions on the can.

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javeryh

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Re: What do I use to apply POLY? Help please!!
« Reply #2 on: August 20, 2005, 09:27:39 pm »
Thanks.  I've put 2 coats on and it doesn't seem to be "smoothing out" - I can still feel the wood grain when I run my hand over the wood.  Tomorrow I am going ot put 2-3 more coats on but I don't have faith that it will be as smooth as I want.  I'm sanding with 1000 grit sandpaper in between each coat.  How many coats does it usually take?  Is there something I might be doing wrong?

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Re: What do I use to apply POLY? Help please!!
« Reply #3 on: August 21, 2005, 12:17:04 am »
Where do you people get this High asked grit paper?   1000, 500, 3000??

All you need for your project is 200.  200 should make it like glass.  Three coats of poly and sand between coats.

Get a good paint brush for oil based paints.  Paint it on slow and steady and go in one consistent direction like the direction of the grain.  It will dry fairly smooth.  Then you sand and repeat.  By the time you get to your third coat you shouldn't need to sand.


ONE THOUSAND grit!  What is that... like silk?  :P

javeryh

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Re: What do I use to apply POLY? Help please!!
« Reply #4 on: August 21, 2005, 09:08:29 am »
 ;D  1000 grit - it is a little like silk...  I bought some 220 like the back of the can of poly said to use but on my test piece it was removing the stain color when I sanded so I went out and got some smoother sandpaper.  Am I just supposed to lightly scuff it?

Coat #2 to the test piece still didn't make it that smooth - maybe I'm applying the poly too thin?  I'm worried that 3 coats won't com close either... 

DrewKaree

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Re: What do I use to apply POLY? Help please!!
« Reply #5 on: August 21, 2005, 11:16:19 am »
I think I'm ready to put the first coat of poly on my cab - there are 2 coats of stain on there already and even though I can still see a little bit of the wood coloring in some spots I'm afraid a third coat of stain will make it so you can't see the grain at all. 

Anyway, how do I apply the poly?  A brush seems like it would leave streaks/brush marks and I'm not sure a roller could get into all of the corners and cover all the surfaces.  Can I cut up a cotton t-shirt and fold it into a square and use it to apply the poly?  Any suggestions would be great.  Please help!  THANKS!

Something here doesn't sound right.  Poly is ONLY a clear finish UNLESS it is one of those mixes like Minwax's Polyshades where the stain is mixed in with the poly.  If you're using Polyshades, it WILL make it darker in each application, because of the stain in the stuff, but I don't quite understand what "I can see a little bit of the wood coloring" means.  Are you referring to the ACTUAL wood, or are you referring to the color you are trying to stain it to? 

A foam brush will usually work just fine, a nice brush....anything really.  The only reason poly WOULDN'T self-level is if you put on just enough that you're almost NOT putting any on, or if it's nice and hot and it's drying faster than it should be, not allowing it to level out before it sets up.  The CAN is always your best friend, because the guy from this board who lives in the UK will have different directions and methods, as will the Aussie and the Canadian and the 'mercan.  There are some constants, like applying it, and the other constant is - read the can. 

Thanks. I've put 2 coats on and it doesn't seem to be "smoothing out" - I can still feel the wood grain when I run my hand over the wood. Tomorrow I am going ot put 2-3 more coats on but I don't have faith that it will be as smooth as I want. I'm sanding with 1000 grit sandpaper in between each coat. How many coats does it usually take? Is there something I might be doing wrong?

Poly is a water-based product, so after applying it to the wood, you're essentially wetting down your wood.  That will cause the wood to swell ever so slightly (it WON'T make a difference in your final product) and it will also raise the grain somewhat.  That is what you're feeling.  I'm not positive, because there's not enough information you've given us about what you're using, but it sure does sound as if you're using something that requires a bit thicker coat and you're afraid to do so because you're already losing the grain.

There's a lot of missing stuff - help us fill in the blanks, but so far, it sounds as if you're doing everything right, just not enough of it ;)

  • Type of stain (brand and color)
  • Type of poly(brand and exact name)
  • Temps in your area while applying
  • Amount of time you waited AFTER application before sanding
  • Are you sanding with a hand block (or no block at all) or using a power sander?
  • If using a power sander, what kind?  (Belt, random orbit, plain (back/forth) sander
  • How much would YOU say you are applying per coat
  • How long does that coat you applied take to become tacky
  • Are you eating enough bacon?  ;D

The last one is probably most important, but not to the actual project ;)
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javeryh

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Re: What do I use to apply POLY? Help please!!
« Reply #6 on: August 21, 2005, 02:06:01 pm »
Thanks for the awesome advice.

javeryh

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Re: What do I use to apply POLY? Help please!!
« Reply #7 on: August 21, 2005, 03:20:45 pm »
Also, I've heard that I can apply a coat of wax or something over the poly for a super smooth surface.  Is this true?  If so, do you have any recommendations as to which type of wax to get (furniture wax?)?  How would I apply it - with a rag? and then wipe it off after letting it sit for a while?

Thanks!

DrewKaree

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Re: What do I use to apply POLY? Help please!!
« Reply #8 on: August 22, 2005, 12:26:34 am »

I used Minwax colored stain - blue.  It came out OK though not as uniform as I expected.


The tint in those things usually requires REALLY thorough mixing because those products tend to sit on the shelves longer than "regular" stains.  I would bet money that your can says NOT to shake it up because it'll create air bubbles, but here's how you get around that.  Shake the SNOT out of it (mebbe even throw in a big BB or something so it works like a spray paint can) to get that color off the bottom.  Turn the can upside down (making sure NOT to have the cover loosely on....make CERTAIN it's on there good) so the stain works on the sludge color layer on the bottom.  Do this a few hours before you're going to use it.  This'll allow the air bubbles to come to the surface, and distribute the color throughout it.  There will be NO way to even out the color otherwise.  Then, when you're ready to use it, stir it up nice and good once again, only now you really DON'T want to shake it and create those air bubbles.  When they refer to a "high quality" brush, they're talking about one of those higher dollar brushes (think $10-15+).  The bristles are fastened WAY better and tend to not come off in your finish often, if at all.  The reason they cost more is the materials, methods, and quality of putting the brush together.  It's one of the few things where higher price almost always means higher quality, hence it's worth the few extra bucks (which also means you should take better care of it too, but that's another story :) )

Quote

I didn't want a "wood-colored" stain because, I don't know, I wanted something a little unique.  I applied 2 coats and it came out pretty good although some spots are lighter than others (this is what I meant by saying the wood was showing through).  I'm using Minwax polycrylic as my sealant. 


Absolutely nothing wrong with "a little unique"!  I've used that stuff before, and it DOES turn out nice, but unless it's REALLY mixed well, you're almost better off going with an aniline dye...you can still work with that piece though.  The "lighter in some areas than others" is from the pigment not being thoroughly mixed usually.  The polycrylic is perfectly fine as a sealant as well.

If you're really not satisfied with the way it's turning out, I'd suggest sanding it back down (I know, it WILL be a lot of work :-\ ) and start semi fresh.  I'd bet you're putting the polycrylic on there a bit thinner than you should, and something really important you mentioned is that you continued to brush it to smooth it out.  Applying a bit more will give you more material (without excessive build-up) and once it's down, don't continue to brush it.  It seems like it'll work, but in reality, you're working against the results you want.  You're introducing more "lines" that need to be overcome, instead of applying it and letting it level itself. 

Quote
To answer your specific questions:
  • Stain: Minwax colored stain (blue)
  • Poly: Minwax Polycrylic finish (blue can)
  • Temps in your area while applying:  It in my basement but it's hot as hell in NJ but my house has central air conditioning - it's comfortable.  Probablt 72-75 degrees but I don't know for sure.
  • Amount of time you waited AFTER application before sanding: Overnight for first coat; 3.5 hours for second
  • I'm using a handblock with 220 grit (like th back of the can says) but I'm planning on switching to 1000 grit for the next 2 coats
  • I think I'm applying about as thin a coat as possible with the foam brush.  I go over it a bunch of times to smooth it out and I'd say it starts to get tacky after 10 minutes or so.
  • I'm definitely not eating enough bacon because the last time I had it was wrapped around scallops when I was at a restaurant where my wife's parents and my parents were meeting for the first time.  I got sick and spent the entire dinner on the tiolet in the men's room.  This was about 6 years ago and I still can't eat bacon without feeling nauseous.  ;D

No problems truthfully on the stain and poly sealant, just need a bit of mixing and a touch more material.  Try to imagine that you want to put on about 1/16" of the liquid.  Make sure you realize that in some areas you won't be putting nearly enough, so practice on a scrap to see what I mean.  The small area will take less time for you to see the results, and less material.  You'll see that you probably weren't putting enough poly on to level out.  The stain doesn't need anything more than enough to do a color coat, and wipe off the excess after about 5-15 minutes or so, depending on how dark you want it.

Since you're working in your basement, I'd bet it IS about the same temp as the house, but WAY more humid.  I'd prolly wait a bit longer before sanding - maybe a day for the first coat (or 2, it won't hurt, it's just hard to be patient ;) ).  For the second and following coats, I'd wait at LEAST as long as the first coat. 

With the hand block, you flat out no ifs/ands/buts about it MUST be working in the direction of the grain (dunno if you are or not) otherwise get a random-orbit sander and use that to sand with. 

Tacky after 10 minutes prolly means you're getting there with how much you want to put down, add a touch more, and ONLY brush it on (think "flowing" the liquid material onto your wood) once, and leave it.  I PROMISE, it may not look like it, but it WILL level itself off better than the job you're trying to help it out with ;)

Finishing requires planning, preparation, and patience.  Skip any of them, and your finish MIGHT come out, and be good to you, but won't be the best it CAN be.  It's one of the most annoying things for people like me with very little patience.  My advice?  Marry someone like my wife who likes to do your finish work ;D

Hope all that helps and this ends up working out to your satisfaction.  Let us know what you decide and how it turns out.
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javeryh

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Re: What do I use to apply POLY? Help please!!
« Reply #9 on: August 22, 2005, 02:28:34 pm »
Thanks Drew.  You sure know a lot.  I just put the 4th (and final) coat of poly on after sanding with 600 grit sandpaper.  It looks really nice, I think.  My wife has the digital camera with her so I can't post pictures yet but I think I'm about ready to make an announcement about my project really soon.

Do you have any thoughts about furniture wax or anything to put on over the poly or am I good to go?  All I have to do now is decide on a name and get some corresponding artwork made and the exterior of my cab will finally be complete!

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Re: What do I use to apply POLY? Help please!!
« Reply #10 on: August 22, 2005, 10:21:16 pm »
This is gonna sound screwy, but when you're happy with the finish, apply automotive rubbing compound and rub it out before you wax it.  Minwax DOES make a wax (it's cleverly named "PASTE WAX" ::) I wonder who the marketing genius was that thought that up!) that'll keep all your products in the same line.  Truthfully, you prolly don't need the wax, and you can also use plain old car wax (seriously!  And after you see the price on that rinky-dink container from Minwax, you prolly won't mind giving it a try either!)

Anything I know, I learned from other older more knowledgeable guys, reading, or trial and error, and I don't even know all that I need to know to say I know a little bit ;D

Check out your local library for a finishing book - it'll be the best time spent reading that thing you'll ever invest into your life, and you'll see some ways to apply stuff you might never have thought of. 

Go ahead and give that 1000 a shot after the 600 - I bet you'll dig the effort it takes, even if others won't think it's worth it :)  If you REALLY wanna get a silly-sweet looking finish, look into wet-sanding that final coat!  The right paper, some water and a few drops of dishwashing detergent is all you need, and you can end up with a piano finish! (only applies to gloss finishes - satin or semi-gloss will take a nice shine, but have a limit to 'em)
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