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.

Category: Oddities

Who’d’a thunk it?

  • Gas Price Signage: FAIL

    Gas Price Signage: FAIL

    The big price displays at the Mobil station on the corner have always behaved oddly, but these replacements began failing within a week of their installation:

    Mobil price sign - north face
    Mobil price sign – north face

    That doesn’t look too bad, until you notice the number of dead LEDs in both red displays.

    The south face is in worse shape:

    Mobil price sign - south face
    Mobil price sign – south face

    The green LEDs seem to be failing less rapidly than the reds, but I don’t hold out much hope for them.

    The previous display had seven-segment digits made of smooth bars, rather than discrete LEDs. This one appeared after the segments failed at what must have been more than full brightness; the red LEDs were distracting by day and blinding by night.

    Maybe they got the LEDs from the same folks selling traffic signals to NYS DOT? The signals around here continue to fail the same way, so I suppose DOT doesn’t replace them until somebody enough people complain.

  • Jake the Turkey Gets Trapped

    Jake the Turkey Gets Trapped

    Another turkey figured out how to get the best seeds from under the bird feeder in the far corner of the patio:

    Turkey tracks on the patio
    Turkey tracks on the patio

    Jake, our affectionate term for whichever turkey is having trouble, eventually walked from right to left closest to the house, down the patio steps, and rejoined the flock. The tip of his “arrow” tracks aims backwards, because all three toes point forward.

    It turns out turkeys panic when they’re behind a barrier and see the rest of their flock moving away. A panicked turkey makes a lot of noise while rushing back and forth, the rest of the flock contributes what must be advice, and the resulting tumult suffices to wake the dead.

    That would be me, in the bedroom off to the left, but my cold-boot sequence takes long enough that I missed the action.

    Some years ago, we discovered how distressed a trapped turkey can get when the flock descended from trees in an adjacent yard, with (a different) Jake landing in the garden, on the other side of the fence from the flock. Over the course of the next several hours, Jake ran back and forth along the fence while the rest of the flock alternated between sympathetic honking and disinterested feeding, until eventually he remembered his wings and managed a short-field takeoff over the fence.

    Never a dull moment around here …

  • Grand Prize User Interface FAIL

    Grand Prize User Interface FAIL

    Found in an apartment building lobby:

    Apartment lobby call box
    Apartment lobby call box

    The LCD gibberish comes from an interaction with the camera shutter. It scrolls a lengthy set of instructions, but the peeling labels demonstrate ain’t nobody got time for that.

    You were supposed to figure out how to use this thing with no instructions other than the scrolling display. In particular, the multi-multi-function keypad has no labels.

    I suspect most folks just haul out their phones and call the tenant.

  • Tree vs. Guide Rail: Sheared Bolt

    Tree vs. Guide Rail: Sheared Bolt

    Spotted on a walk along the Mighty Wappingers Creek after a storm with plenty of gusty winds:

    Tree-smashed guide rail
    Tree-smashed guide rail

    The tangle of branches and logs came from a tree that fell across the road from the far right side and put that crease into the guide rail. The vertical stump seems unrelated to that incident.

    A bit of rummaging at the base of one post produced a victim:

    Tree-smashed guide rail - sheared bolt - side
    Tree-smashed guide rail – sheared bolt – side

    The impact produced enough force to turn the rail brackets into guillotine metal shears against the posts:

    Tree-smashed guide rail - sheared bolt - end
    Tree-smashed guide rail – sheared bolt – end

    It’s not a clean shear cut, which isn’t surprising under the circumstances.

    An ordinary ½-13 Grade 8 bolt has a 17 k pound proof load: popping that bolt required a mighty oomf.

    Memo to Self: stay indoors during windy storms!

  • World War II Dog Tag Layout

    World War II Dog Tag Layout

    Quite some time ago, I hammered out G-Code to engrave ersatz dog tags for a Cabin Fever demo:

    Cabin Fever Dog Tag
    Cabin Fever Dog Tag

    A dozen years later, making a World War II dog tag is a whole lot easier:

    John Q Public - WWII dog tag
    John Q Public – WWII dog tag

    Well, “easier” if you allow laser engraving in white-on-black Trolase using a font intended to mimic a typewriter.

    Close enough, methinks.

    Which comes from a simple layout:

    John Q Public - WWII dog tag - LB layout
    John Q Public – WWII dog tag – LB layout

    The outline traces a scanned image of my father’s tag, fitting a few hand-laid splines around the curves:

    John Q Public - WWII dog tag - spline curves
    John Q Public – WWII dog tag – spline curves

    I generated a random serial number based on my father’s draftee status (he was in his early 30s during his South Sea Island tour) and state of residence; my apologies to anyone carrying it for real. His blood type was A and (I think) the religion code marks him as “Brethren”, a common group in my ancestry.

    Given the outline, various plastics, and a laser, other effects become possible:

    WWII dog tag outline test
    WWII dog tag outline test

    It might come in handy for something, someday.

    The LightBurn SVG layout as GitHub Gist:

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  • Dunkin’ Drive-Through: Triumph of Hope Over Experience

    Dunkin’ Drive-Through: Triumph of Hope Over Experience

    The bollard at the newly opened Dunkin’ stands upright once again:

    Dunkin drive-through corner bollard - repaired
    Dunkin drive-through corner bollard – repaired

    I can’t tell whether the bollard stands in more concrete this time, but the gray pipe to the left of the gas meter is definitely new.

    In round numbers, it took less than a week for the first impact, a week for the first repair, and … we shall see.

    The white disk just behind it is a rat trap, with a subtle explanatory sign directly above it. The building has three such traps, so they’re apparently trying to stay ahead of a known problem; we find similar traps around most commercial establishments.

  • Universal Socket to Quarter-Inch Hex Adapter Stack

    Universal Socket to Quarter-Inch Hex Adapter Stack

    Being that type of guy, I wanted to salvage a loooong square-head bolt from the utility pole stub formerly holding up the mailboxes, which would require a few gazillion turns of its square head with the Adjustable Elephant Wrench. After verifying I couldn’t just hammer the mumble thing through the pole, I gave a few turns of the Universal Socket on a ratchet:

    Universal Socket Wrench
    Universal Socket Wrench

    It’s intended for goobered hex heads up to 1-¼ inch, but the pins slide down around pretty much anything that sticks out and jam against the shell, so it’s handy for those last-ditch extraction events.

    After verifying doing this by hand would occupy me until just before the heat death of the universe, I followed Mad Phil’s signal connector adage: “If you can get to BNC, you can get to anything.”

    Some rummaging produced this unsteady mechanical ziggurat:

    Universal Socket to quarter-inch hex - adapter stack
    Universal Socket to quarter-inch hex – adapter stack

    From bottom to top:

    • Universal Socket with ½ inch square drive socket
    • 1/2 inch square drive to ¾ inch hex
    • 19 mm (close enough to ¾ inch) 12-point socket to ⅜ inch square drive socket
    • ⅜ inch square drive to ¼ inch square drive socket
    • ¼ inch square drive to ¼ inch hex drive

    Then stick the teeny end into the hand drill, rig engines for reverse running, and whine away on that bolt, which obligingly backed right out.

    After the fact, I found the obviously missing ¼ to ½ inch square drive adapter hiding in the Drawer o’ Sockets:

    Universal Socket - short adapter stack
    Universal Socket – short adapter stack

    Which doesn’t make any more sense, but is less likely to fall apart under normal use.

    Aaaaand one more adapter makes this possible:

    Improper square drive adapter stack
    Improper square drive adapter stack

    That’s a 50 mm socket turned by ¼ inch hex drive in four easy steps, although I’m reasonably sure it still won’t get the idler bogies off my armored personnel carrier.

    The stray adapter steps down from ½ square to ⅜ square, should a need for a breaker bar occur during eyeball surgery.