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Thread: Oil & Poly

  1. #1
    Join Date
    Jan 2008
    Location
    Australia
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    Default Oil & Poly

    I usually finish my furniture using just oils. Organoil 'hard burnishing' or 'danish oil'.

    I had one project, made of blackwood, finished in 'hard burishing', that after 6 months of use had white scratches and a stain from water from a spilt vase.

    I've got the project back and am sanding down the surface. My plan was to re-oil (maybe many times) and wax. Now I'm thinking of adding a poly.

    Questions:
    • What are peoples thoughts on toughing up oil finish?
    • Can I put a poly over the top of an oil finish?
    • I've heard of mixing 25% poly with 75% oil? Does that work is or that heresy?
    • Should I just keep adding oil and try to burnish it again?
    • With straight poly do I get richness of colours as I would with oil?
    • What's the best poly? I've used feastwatson satinproof.

  2. #2
    Join Date
    Oct 2005
    Location
    Yass
    Age
    65
    Posts
    0

    Default

    Boz,

    In no particular order:

    I understand most Danish oil has poly in it already. Several people on the forum (including me) mix their own finish with various recipes (I use the Sam Maloof formula of 1/3 boiled linseed, 1/3 pure tung, 1/3 poly). Others use the Minwax Wipe on Poly or the various Organoil products. Not sure how to find an ingredients list for the Organoil products, but perhaps someone on the forum knows.

    I've used the Organoil Danish on a few things, but the citrus odour seems to penetrate through the whole house from my garage/workshop, so I switched. End result was always good, and haven't had the issues you describe, but perhaps my stuff didn't get abused as much?

    For the blackwood table, I'd go back with what you used originally. My .02 is that mixing finishes on furniture is usually not a good idea. (don't ask me how I know this)

    Been a few years since I used a straight poly on bare timber, but I wasn't happy with it. Probably my application technique, but brushing it on and letting it dry as per the instructions on the can left me with a rough, plastic looking finish. Definitely did not get the richness of colour you get with DO.

    Since DO probably has poly in it already, going back over it with poly is probably OK, but I'd definitely try it on some scrap first. However, the advantage of a DO over straight Boiled Linseed or other oil is that it is supposedly already 'toughened' with the polyurethane or some other polymer, so it shouldn't need a top coat of something else.

    A wax on top of oil will take it from a soft satin finish to a lovely shine but may not add much toughness.

    Others on the forum will know much more than I, and if you search for danish oil threads you may find some more helpful info.

    Regards,

    Tex

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