Waxed or dewaxed shellac

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  • Waxed or dewaxed shellac

    Posted by Jorge Rodríguez Spiral Sun Guitars on February 21, 2025 at 11:57 am

    This is probably a usual discussion, but I’m interested to hear what the more experienced people in french polishing think about it.

    I use dewaxed shellac for finishing, but some luthiers swear that waxed shellac (button lac) makes a harder finish.

    Is that right? I always read everywhere that waxed shellac should be avoided.

    Thanks!

    Jorge

    James Huntley replied 10 months, 1 week ago 4 Members · 4 Replies
  • 4 Replies
  • Chip Tait – Brooklyn Fretworks

    Member
    February 24, 2025 at 9:24 pm

    I’m with you. Dewaxed for the win.

    I know that some folks like to make their own from button lac, but in each case, dewaxing is part of the process.

    I learned French Polishing in furniture school many years ago, and we always made ours with dewaxed blond flakes.

    • Jorge Rodríguez Spiral Sun Guitars

      Member
      February 25, 2025 at 6:43 am

      Some people claim that they use button lac WITHOUT dewaxing, they say it makes a harder finish. I don’t know who’s wrong or right, it’s just one of those neverending arguments… but other people swear that waxed shellac makes softer finishes. Anyway… 🙂

  • Martin Maudal

    Member
    March 7, 2025 at 10:54 am

    A couple things… the process of making Indian button lac uses a good deal of heat, and so polymerizes the shellac. It is technically not dewaxed, but it’s not waxy. And it does in fact make for a very hard and beautiful finish. tip – you can also add a drop of walnut oil, which also polymerizes [dries completely] and adds flexibility and a super nice gloss to a French polish.

    Now, the only disadvantage I can think of is that it doesn’t have the same fantastic adhesion qualities that dewaxed shellac has. So I use *that* as a washcoat say between an epoxy sealer and a lacquer clear coat.

  • James Huntley

    Member
    May 10, 2025 at 10:26 am

    I’m going to say a third option, Buttonlac. It has natural wax that aids in padding and also results in a stronger finish.

    When using buttonlac, I crush the button and put them in a tea-bag made from 3 layers of cotton. After letting the tea bag sit in ethanol for a week, I filter the shellac into a new bottle and discard the tea-bag. The result is 95% of the wax is filtered out but the remaining wax aids in padding.

    One note, I use dewaxed shellac for the seal coat before using buttonlac.

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