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

  • @AMillionMonkeysOP
    link
    32 years 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
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      42 years 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
        link
        22 years 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.