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Thread: Danish oil question

  1. #1
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    Danish oil question

    Just finished a bowl with Watco DO and I guess I didn't wipe it off good enough because now it is a bit gummy inside the bottom. Can I use mineral spirits to clean it up or would it be better to let it fully cure and resand?

    thanks,
    tom

  2. #2
    I would apply another coat and wipe it off good. The solvent in it should redissolve the soft stuff.

  3. #3
    Yes you can use mineral spirits as you suspect.

  4. #4
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    You can use any solvent but don't expect results. Hardening oils crosslink with oxygen, they do not merely "dry" like solvent based finishes. Good luck.

  5. #5
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    Watco = Minwax

    they use 75% of volatiles + some BLO,in their finishes, the speed of the BLO polymerization is pretty slow, especially at cooler temps, I do think you can remove the Danish Oil with mineral spirits.

    If your finish is old, that would be a good reason for the problem you have, also if it is cold where you have the finish and or turning.

    Watco = Minwax.jpg Watco Danish Oil volatiles.jpg

    Danish Oil msds 1.jpg Watco Danish Oil msds 2.jpg
    Last edited by Leo Van Der Loo; 04-13-2018 at 11:25 PM.


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  6. #6
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    Quote Originally Posted by Thomas Wilson80 View Post
    Just finished a bowl with Watco DO and I guess I didn't wipe it off good enough because now it is a bit gummy inside the bottom. Can I use mineral spirits to clean it up or would it be better to let it fully cure and resand?
    Tom, I cleaned up one for someone else with with mineral spirits. I had given her some oil and instructions but she forgot to wipe it off well. She brought it back after a long time (weeks? months? can't remember) and it was still gummy and sticky but cleaned up nicely. I may have used some fine steel wool on it along with or after the mineral spirits but can't remember that either, it was a couple of years ago.

    It is important, I think, to wipe off the each coat completely - I use paper shop towels. I put the first coat on liberally until it won't take any more oil, let sit for an hour or so, then wipe off completely. I'll check it a few hours later and if any oil bleeds out of the pores I wipe that off two. I let the first coat dry/cure for at least two days then wet sand any spots I'm unhappy with using oil and 600 grit paper, wipe off all oil completely and let dry/cure for at least a day. I might go over the surface with 0000 steel wool if I think it needs it. I apply further coats, let sit for 20 minutes or so, wipe off completely, then wait at least overnight before repeating. I might use 6 coats or more. I usually don't buff to a gloss but prefer the softer look of just the oil.

    JKJ

  7. #7
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    Quote Originally Posted by Leo Van Der Loo View Post
    Watco = Minwax

    they use 75% of volatiles + some BLO,in their finishes, the speed of the BLO polymerization is pretty slow, especially at cooler temps, I do think you can remove the Danish Oil with mineral spirits.

    If your finish is old, that would be a good reason for the problem you have, also if it is cold where you have the finish and or turning.
    Old and/or cold are definitely factors to consider - especially OLD. A partially filled can of Watco from 2 or 3 years ago is pretty worthless - will never dry properly.
    Last edited by John K Jordan; 04-14-2018 at 12:17 PM. Reason: fixed quote problem
    "... for when we become in heart completely poor, we at once are the treasurers & disbursers of enormous riches."
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  8. #8
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    Quote Originally Posted by Sam Murdoch View Post
    ...A partially filled can of Watco from 2 or 3 years ago is pretty worthless - will never dry properly.
    Might depend on how it is stored. I fill my partially emptied cans of finishes with nitrogen to displace the air. I don't write dates but they seem to last a long time and don't go bad.

    JKJ

  9. #9
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    ^ Yes, absolutely, but if not treated prior to storage
    "... for when we become in heart completely poor, we at once are the treasurers & disbursers of enormous riches."
    WQJudge

  10. #10
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    I always clean Watco Danish oil with Acetone and never a problem.
    John T.

  11. #11
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    Thanks for all of the replies. I had a defined circle of sticky DO in the bottom of the bowl (didn't take a picture) but was able to get it off by wiping down with fresh DO followed by blending it with steel wool. I'm still getting the hang of turning and wish I could do it more often but am definitely hooked.

    This is from a black walnut log about 9" in diameter, turned semi-wet on my mini-Jet and finished with just DO.
    Comments/critiques welcome.
    Tom

    BWbowl.jpgBWbowl2.jpg

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