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Thread: Thinning down Interlux Schooner Varnish

  1. #1
    Join Date
    Jun 2012
    Location
    Knysna, Western Cape, South Africa
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    Default Thinning down Interlux Schooner Varnish

    Having just stripped my set of spoon-blade oars down to bare wood, I am ready to apply a good quality marine varnish. I have managed to find some Interlux Schooner and note from the instructions on how to apply that the first coat should be thinned down with Interlux Brushing Liquid 333. As I doubt I shall be able to find this product (I live at the bottom end of the African continent) will mineral turpentine do?

    Mineral turps is often used to tin down solvent-based paints so I'm hoping it will mix with Schooner.

    Dave

  2. #2
    Join Date
    Sep 2007
    Posts
    374

    Default Re: Thinning down Interlux Schooner Varnish

    Mix a very small batch and test it on a scrap. If it is viable the varnish should dry hard enough to sand in 24 hours.

  3. #3
    Join Date
    Oct 2002
    Location
    N. Thetford, VT
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    371

    Default Re: Thinning down Interlux Schooner Varnish

    On an old thread, many were recommending mineral spirits as a sub.
    http://forum.woodenboat.com/showthre...r-Interlux-333

  4. #4
    Join Date
    Nov 2004
    Location
    Port Townsend WA
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    10,914

    Default Re: Thinning down Interlux Schooner Varnish

    I usually use turpentine for thinning varnish. It will slow the dry time a bit, allowing a hot coat to be applied with no sanding.
    Jay

  5. #5
    Join Date
    Jun 2012
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    Knysna, Western Cape, South Africa
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    Default Re: Thinning down Interlux Schooner Varnish

    Thanks Torna, My oars are precious ! I'll hunt down some 333.

    Dave

  6. #6
    Join Date
    Mar 2001
    Location
    FL
    Posts
    106

    Default Re: Thinning down Interlux Schooner Varnish

    I use turps or mineral spirits on all interlux single part paints and varnish. Been doing this for yrs without issues. 333 is approx 50/50 kero/naptha and I don't find it to be substantially different in drying or in life of paint...of course this is in Florida's high humidity (90-95%) and results may be different in low humidity.

  7. #7
    Join Date
    Oct 2000
    Location
    Padanaram, MA USA
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    9,318

    Default Re: Thinning down Interlux Schooner Varnish

    The principal solvent of Schooner varnish is Stoddard solvent, aka mineral spirits.
    Mineral spirits or turpentine will work nicely.
    The paint companies love to get $15/pint for very ordinary solvents. 333 is a mix of kerosene and naphtha.

  8. #8
    Join Date
    Jun 2012
    Location
    Knysna, Western Cape, South Africa
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    Default Re: Thinning down Interlux Schooner Varnish

    Jim, You are a sceptic ! Just like me. I'll go with mineral turps. Thank you.

    Thank you to you all for the helpful comments.

    Dave

  9. #9
    Join Date
    Oct 2000
    Location
    Padanaram, MA USA
    Posts
    9,318

    Default Re: Thinning down Interlux Schooner Varnish

    When one of these questions arises, the products Material Safety Data Sheet (MSDS), which is usually online, will often blow the marketing fog away.

  10. #10
    Join Date
    Jun 2012
    Location
    Knysna, Western Cape, South Africa
    Posts
    30

    Default Re: Thinning down Interlux Schooner Varnish

    Update : Mixed a 50/50 Schooner/Mineral Turps test and applied it to a small section of the oar's loom earlier today. Worked perfectly, dry to the touch within two hours.

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