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Thread: Sanding Sealer

  1. #1
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    Sanding Sealer

    Fairly new to some aspects of woodworking and have a LOT to learn in the finishing area. I've heard the term sanding sealer and then saw it on the store shelf the other day. What is it? What do you use it for? When do you use it and when do you not use it? Someone please educate me. Thanks.

  2. #2
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    Sanding sealer is a dewaxed shellac. It has several uses including sealing wood befor staining to help control splocthing. Also used to keep grain from reaising up and used to seal wood befor top coat is put on to keep the wood from soaking up so much finish.

  3. #3
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    Hi,

    I am definitely NOT a finish guy. However, from experience, be sure you get de-waxed shellac if you are going to put any other finish over it. DAMHIKT (That is an abbreviation you will see all too often of FWW ((Family Wood Working)). Don't Ask Me How I Know That.

    Enjoy,

    JimB

    SealCoat by Zinsser is the one Glenn, my youngest son, and I use. Glenn does some fabulous work. I just plug along.
    First of all you have to be smarter than the machine.
    VOTING MEMBER

  4. #4
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    Here's a good description from one of the masters of wood finishing:

    http://www.popularwoodworking.com/de...lers-washcoats

    So, the answer to your question is a bit more involved that dewaxed shellac, although dewaxed shellac can be used as a sanding sealer.

    A bit more from Bob Flexner on shellac:

    http://www.woodshopnews.com/columns-...-all-just-hype
    When the going gets weird, the weird turn pro. - Hunter S. Thompson
    When the weird get going, they start their own forum. - Vaughn McMillan

    workingwoods.com

  5. #5
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    Oct 2009
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    Near Gassaway,West Virginia
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    thanks Vaughn that sorta cleared the air.
    Fred
    steercreekwood.com

  6. #6
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    I will mix Balins stain with my sanding sealer and lacquer thinner. The color is much richer then sealing and then staining.

    If you seal 1st and then spray a cherry over the sealer you will get more of a red tone that the brown of the cherry.
    If you mix the cherry in the sealer you will get the true cherry color tone.

    But when mixing stains with sealer You will need to coat the colored sealer with at least 3 coats of sealer before you can sand.
    I will usually use a 3M sanding pad to wipe each coat as it dries so not to pull the stain coat off.
    I dream a lot. I do more painting when I'm not painting. It's in the subconscious.
    ::: Andrew Wyeth :::
    colonialrestorationstudio.com

  7. #7
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    ok dave your a refinisher as well.. so what is your sealer actually in real life, its not shellac right its something in a form of lacquer.. and vaughn that was some interesting reading..
    If in Doubt, Build it Stout!
    One hand washes the other!
    Don't put off today till tomorrow!

  8. #8
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    Okay, lets try a third definition.
    Clear dewaxed shellac (1 pound cut when I do it) works as a sealer, but is only one of the choices
    Lacquer with stearates works as a sealer, but I haven't used that since I went to water-based finishes.

    Basically it is any transparent material that fills some of the wood pores (i.e. sealer), providing a very smooth surface with good adhesion for building the following coats of finish. To be sure it is flat, it generally is a soft finish that is easy to sand very smooth. My water based lacquer can be thinned a few percent and is a good sealer, but it doesn't "pop" the color of walnut and some other woods as well as other sealers like shellac. My favorite is a custom sealer product from my finish vendor - covers well, sands easily, and brings out the color as well as any other sealer I have used - but it is neither shellac nor lacquer.
    Charlie Plesums, Austin Texas
    (Retired early to become a custom furnituremaker)
    Lots of my free advice at www.solowoodworker.com

  9. #9
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    Mar 2008
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    Winchester Ky.
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    Well I will ask a question out of not knowing better? Would you ever want to use a sealer under a painted finish?

  10. #10
    Join Date
    Nov 2006
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    Quote Originally Posted by Charlie Plesums View Post
    Okay, lets try a third definition.
    Clear dewaxed shellac (1 pound cut when I do it) works as a sealer, but is only one of the choices
    Lacquer with stearates works as a sealer, but I haven't used that since I went to water-based finishes.

    Basically it is any transparent material that fills some of the wood pores (i.e. sealer), providing a very smooth surface with good adhesion for building the following coats of finish. To be sure it is flat, it generally is a soft finish that is easy to sand very smooth. My water based lacquer can be thinned a few percent and is a good sealer, but it doesn't "pop" the color of walnut and some other woods as well as other sealers like shellac. My favorite is a custom sealer product from my finish vendor - covers well, sands easily, and brings out the color as well as any other sealer I have used - but it is neither shellac nor lacquer.
    so charlie what are you using as a sealer to pop the figure or color of the wood prior to your final finish?
    If in Doubt, Build it Stout!
    One hand washes the other!
    Don't put off today till tomorrow!

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