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

  • Bike Helmet Mirror: Always Have A Spare

    As fate would have it, the telescoping stalk on Mary’s helmet mirror broke off at the ball mount a few days after I assembled another spare mirror:

    Helmet Mirror Ball Mount - broken shaft
    Helmet Mirror Ball Mount – broken shaft

    That’s the point where all the stress concentrates, but the stalk lasted almost exactly six years and didn’t owe me anything.

    So I clamped the mirror+shaft+ball from a spare into the mount on her helmet, and she rode off as planned.

    Once again being down to a single spare, I drilled a few more 10 mm balls:

    Helmet Mirror Ball Mount - ball drilling
    Helmet Mirror Ball Mount – ball drilling

    Cleaning up the end of the broken shaft let me shove it into a drilled ball:

    Helmet Mirror Ball Mount - repaired - drilled balls
    Helmet Mirror Ball Mount – repaired – drilled balls

    The insert and random screw came from the stub end of the broken shaft: ramming it into the cleaned-up end makes the job look Good Enough™.

    Clamp the repaired stalk into the spare mount, drop the drilled balls & lathe fixture back in their bag, and maybe it’ll be another six years before they’re needed.

    Life is good!