I have a new pine floor with 2 coats oil based poly (no stain). I want to fill in numerous countersunk nail holes that were left unfilled. I will be putting down a 3rd coat of poly after that. Would Elmers Wood Filler work, or is there a better solution? I want to make sure whatever I use will stay put. Thanks!

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    Hi, welcome to StackExhange. You want a time machine ^_^ (Filler goes on the bare wood, or wood that has been lightly 'sealed', not over a layer of varnish. ) – Graphus Jan 21 at 9:17
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    I've never had to do anything like this so I don't really want to post this as an "answer", but the best thing I can think of would be a shellac-based pore filler stick. Shellac is a "universal binder", and can adhere to almost any kind of finish. Wax-based sticks definitely won't stick to a cured finish, but with the shellac you might have a chance. Basically you melt a bit off the stick with a small iron (just bigger than a soldering iron), smear the melted goop into your hole, then level it out with a clean iron. – SaSSafraS1232 Jan 21 at 17:10
  • Thanks ror replies - if I could get a hold of H.G. Wells, I'd be filling 2 poly's ago! I've got a conundrum for sure, appreciate the shellac filler stick suggestion and will check into it. – Steve Jan 24 at 15:24

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