The Smell of Molten Projects in the Morning

Ed Nisley's Blog: Shop notes, electronics, firmware, machinery, 3D printing, laser cuttery, and curiosities. Contents: 100% human thinking, 0% AI slop.

The New Hotness

  • Sump Pump Tether Switch Harvest

    The basement curtain drain sump pits contained two ancient sump pumps badly in need of replacement, so I got to find out what made their tethered switch floats rattle like that.

    Having recently stood up the Main Workbench with its big vise, I could saw without compunction:

    Sump pump tether switch - sawing
    Sump pump tether switch – sawing

    Which revealed an ordinary snap-action switch:

    Sump pump tether switch - opened
    Sump pump tether switch – opened

    Further sawing exposed the rattler:

    Sump pump tether switch - parts
    Sump pump tether switch – parts

    Those 1 inch steel balls now nestle in the Big Box o’ Bearings and I’m sure the snap-action switches will come in handy for something.