anyone with experience in varnishing ? (too visible brush strokes)
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Thread: anyone with experience in varnishing ? (too visible brush strokes)

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  1. #1
    cr
    May 2005
    Drake, Costa Rica
    1,458
    2044 times

    anyone with experience in varnishing ? (too visible brush strokes)

    fishing deep here
    looking for some guidance on varnishing flat boards w/o visible brush strokes

    well sanded hardwood boards 1x17x10' (cachimbo), seal coated and lightly sanded, 1st coat sanded flat,
    and then issues with brush strokes

    the varnish is Sherwin Williams Polyurethane Varnish, 1 part - Brilliant; solvent is Mineral Spirits as appropriate
    amb T is low 80s in the shade and the varnish's viscosity is similar to 30wt motor oil

    on the 'net multiple thin coats are recommended but w/o diluting with solvent my coats are thick and with the occasional brush stroke
    also stated is that a flat coat w/o brush marks will only be obtained by spraying

    one source suggested heating the varnish to reduce its viscosity when applied

    any experience out there to assist ?

    am I chasing my tail ?
    Kray Gelder likes this.

  2. #2
    cr
    May 2005
    Drake, Costa Rica
    1,458
    2044 times
    buffing with a power tool ?

    https://baileylineroad.com/flawlessl...ng-power-tool/

    anyone ?
    Kray Gelder likes this.

  3. #3
    cr
    May 2005
    Drake, Costa Rica
    1,458
    2044 times
    I am an idiot, will leave this thread up for any other idiots

    when all else fails, read the directions
    duh
    "Reduction for brush or roller 10% - 15% Mineral Spirit"

    never should have been using it straight
    bleh
    Kray Gelder and Rebel - KGC like this.

  4. #4
    cr
    May 2005
    Drake, Costa Rica
    1,458
    2044 times
    postscript

    diluted with ~20% mineral spirts and did not heat
    just fine, but apply with a kinda dry brush (thin coats -> not thick)
    RW and Rebel - KGC like this.

  5. #5
    us
    Aug 2012
    New Mexico USA
    My Head
    2,316
    1821 times
    My favorite for most finish has been lacquer. Deft is one I've used a lot. It also comes in spray cans. It does have a strong smell if that's a problem. fastest drying. Another I have started using is a hand rubbed poly. Seems hard to make a mistake with it. Just an applicator like a lint free cloth. I use a paper product made for this.
    A step most miss of don't know is before tacking the surface take a lint free cloth and soak with turpentine or paint thinner and give the wood a rub. You might be surprised how much saw dust has been left behind.
    I had a large project once before and bought a spray kit from Harbor Freight. Cheap but built and did well. It had 2 different cans, a LPHV kit that ran fine on my limited cap compressor.
    If the project won't be exposed to things like drink glasses etc. a lot of fussy woodworkers still go with shellac. A top notch finish is using shellac with a french polish. Tricky but if you like violins, this is how it's done. The wood grain won't be muddy like many stains will do.
    A work around for this is water or alcohol based powder stains.
    BillA likes this.
    Chop wood..Carry water

  6. #6

    Sep 2014
    Midwest, North of 3660'
    3,576
    6514 times
    All Types Of Treasure Hunting
    My old man, though not a professional, was an expert at applying varnish. He used to own a 40' boat that needed guardrail varnish every year. What he would do is lightly wipe with fine brass wool between coats, wipe with a tack cloth to remove the dust, and apply the finish coat with a foam brush.

    It wasn't often that he screwed up a coat but when he did, and being a perfectionist, he wasn't afraid to sand it smooth again and apply a couple more coats. Hope that helps.
    BillA likes this.
    A democracy will always eat it's self.

    The king is dead. May The King return...

  7. #7
    cr
    May 2005
    Drake, Costa Rica
    1,458
    2044 times
    indeed, am developing a body of knowledge about sanding and mediums; can all be redone until satisfactory

  8. #8
    us
    ARC

    Aug 2014
    Bahia Del Espiritu Santo - "The Bay of the Holy Spirit” - La Florida
    JW 8X V.2 - ML X2 - VP 580
    22,047
    55627 times
    All Types Of Treasure Hunting
    Welp... I happen to be an expert in varnish work.

    I spent years in my early twenties refinishing yachts in marinas.

    I was known throughout for top notch wood work... and had a waiting list for my work.

    So... Bill... fire away.

    Maybe I will tell one of my secrets.
    DETECT WITH RESPECT - Have permission... Fill holes... Dispose of trash. - The Random Chat Thread - http://www.treasurenet.com/forums/ev...en-24-7-a.html

  9. #9
    us
    ARC

    Aug 2014
    Bahia Del Espiritu Santo - "The Bay of the Holy Spirit” - La Florida
    JW 8X V.2 - ML X2 - VP 580
    22,047
    55627 times
    All Types Of Treasure Hunting
    Bill ... first let me ask... is this wood going to be inside or out ? ? ?
    DETECT WITH RESPECT - Have permission... Fill holes... Dispose of trash. - The Random Chat Thread - http://www.treasurenet.com/forums/ev...en-24-7-a.html

  10. #10
    cr
    May 2005
    Drake, Costa Rica
    1,458
    2044 times
    did you ever heat varnish to reduce the viscosity ? specifically as an alternative to adding a diluent

  11. #11
    us
    ARC

    Aug 2014
    Bahia Del Espiritu Santo - "The Bay of the Holy Spirit” - La Florida
    JW 8X V.2 - ML X2 - VP 580
    22,047
    55627 times
    All Types Of Treasure Hunting
    nope...
    DETECT WITH RESPECT - Have permission... Fill holes... Dispose of trash. - The Random Chat Thread - http://www.treasurenet.com/forums/ev...en-24-7-a.html

  12. #12
    us
    ARC

    Aug 2014
    Bahia Del Espiritu Santo - "The Bay of the Holy Spirit” - La Florida
    JW 8X V.2 - ML X2 - VP 580
    22,047
    55627 times
    All Types Of Treasure Hunting
    Inside or out ?
    DETECT WITH RESPECT - Have permission... Fill holes... Dispose of trash. - The Random Chat Thread - http://www.treasurenet.com/forums/ev...en-24-7-a.html

  13. #13
    cr
    May 2005
    Drake, Costa Rica
    1,458
    2044 times
    outside windows and frames, of cachimbo a fairly hard wood
    the other concurrent application is for countertops which do see sunlight

  14. #14
    cr
    May 2005
    Drake, Costa Rica
    1,458
    2044 times
    wow, sunset and the sky/cloud/rain is a hot pink

  15. #15
    us
    ARC

    Aug 2014
    Bahia Del Espiritu Santo - "The Bay of the Holy Spirit” - La Florida
    JW 8X V.2 - ML X2 - VP 580
    22,047
    55627 times
    All Types Of Treasure Hunting
    Ok... when I did varnish work it was always on boats... which obviously are exposed to sunlight / high U.V.

    I had a favorite varnish which I hear has been since discontinued... Behr Super Spar... the shiznat was like hot honey... loved working with it.

    A spar varnish is recommended.
    DETECT WITH RESPECT - Have permission... Fill holes... Dispose of trash. - The Random Chat Thread - http://www.treasurenet.com/forums/ev...en-24-7-a.html

 

 
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