Doing it by hand with sandpaper is a nonstarter.
Also I don’t have a lathe :-/

  • Bo7a
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    1 year ago

    I’m fairly new at the whole woodworking gig, but I think what I would do is create a negative of the round that you want out of a different piece of wood and then jam some sandpaper into that negative and connect it to my drill.

    • AMillionMonkeys@lemmy.worldOP
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      1 year ago

      I’ve actually tried this! The problem is that the sandpaper is too thick to bend neatly in that tight a radius. Maybe I could buy raw grit and stick it in the cavity with spray adhesive…

      • Ugly Bob@lemmy.world
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        1 year ago

        You don’t want the whole hemispherical cup. Just a semi circle.

        The best and traditional tool for the job is a rasp. I recommend a Shinto rasp. Surprisingly fast and easy to use.

        • The_Pete@lemmy.world
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          1 year ago

          can confirm, I have a rasp (Shinto) and I can throw a 1/4 or 3/8 quarter round on an 8 foot edge before you can get your router set up.