I’m mildly surprised the (apparently recent) wall reupholstering didn’t cover it up. I’m certain many students don’t recognize it.
The FCC says the US is down to 100 k pay phones from a peak of over two million; they don’t tally the number of bare wall mount plates, though.
The overall XY travel is slightly smaller than the initial configuration, because the router sticks out further than the penholder I’d been using. Increasing the
$27 Homing Pulloff distance to 3 mm leaves a comfortable space beyond the limit switches after homing to the positive end:
$13 XY travel distances and switch positions on the other end of the rail leaves a similar comfort zone at the negative end:
Both switches now live on the rear X-axis rail and appear as seen from behind the bench; they just look backwards. The Y-axis switches are on the left rail and look exactly the same.
The XY travel works out to 630 × 460 mm = 24.8 × 18.1 inch, which is Good Enough.
Some fiddling with the Z axis limit switch tape mask produces a nice round 100 mm = 3.9 inch vertical travel. The Z-axis rails just barely clear the table at the lower limit and just barely stay in the bottom bearings at the upper limit, so it’s a near thing. In practical terms, the rails or the tool will smash into the workpiece sitting atop the table before the limit switch trips.
$20=1 Soft Limits and
$21=1 Hard Limits may be excessive, but I vastly prefer having the firmware detect out-of-range moves and the hardware forcibly shut down if the firmware loses track of its position, rather than letting it grind away until I can slap the BRS. The steppers aren’t powerful enough to damage anything, of course, so it’s a matter of principle.
$N0=F150 sets the initial speed, as the default
F0 seems to (sometimes) confuse bCNC’s auto-level grid probing.
$N1=G10L2P1X-633Y-463Z-3 sets the default
G54 coordinate origin to the front-left corner, with
Z=0 at the home position up top, so as to prevent surprises. I expect to use
G55 for most work holder touchoffs, although we’ll see how that plays out.
G30 settings depend on the tool change location and the Z-axis probe location, so they’re still not cast in concrete.
The original camera position put it close to the MPCNC’s DW660 spindle:
Unfortunately, it sat slightly too close to the gantry roller along the X-axis for comfort.
The effort required to pry the mount off its hot-melt glue bed showed it wasn’t ever going to shake loose, so I fired up the glue gun and stuck it to a better spot on the XY assembly:
Seen from the side:
Bonus: it’s now trivially easy to tweak the locking screw!
Realigning the camera and recalibrating its offset proceeded as before.
Anybody capable of fogging a mirror knows how this scam works:
The copious fine print says you can only see the actual fine print by traveling to Arizona:
I’m nowhere near hungry enough to like the odds, even for a $100 Walmart gift card.
An Auto-V.I.N Gauge (their choice of punctuation) must improve the response rate:
Is it any surprise the numbers match?
No. No, it’s not.
The “Gauge” actually contains parts, although fewer than IMO they want you to believe:
It’ll serve to produce measurable current & voltage for an upcoming Squidwrench Electronics Workshop and, because it need not survive the experience, we will take considerable liberties with it.
I’m trying to get a crew … together and live the demolition derby dream
By the time I arrived, the dashboard trim had vanished and the air bags were safely out:
Diligent application of a Harbor Freight “Professional Windshield Removal Kit” cut through the side window seals, but the rear window rested on four impossible-to-cut locating studs:
I managed to pry the glass off using a Gasket Scraper and considerable muttering.
With all the exterior trim, lights, and mirrors gone, the Sienna was in fine race trim:
But, being no longer street-legal, it required trailering. For the record, not all huge pickup trucks have bulky guys with pot bellies behind the wheel:
A few hours later, it was in the Short Track Full Size pack at the Upperco Volunteer Fire Company’s Demolition Derby:
The driver required a few laps to shake off years of safe-driving indoctrination:
But eventually the spirit of the thing took over:
We now know the transmission oil cooler sat just ahead of the left front wheel, where it was exposed to damage by a glancing collision:
The Sienna finished the race and made it almost all the way to the trailer before bleeding out through the ATF cooler.
The driver emerged in fine shape, although the door didn’t work nearly as well as it had fifteen minutes earlier:
A race staffer in a Bobcat aimed the carcass in the right general direction and shoved it onto the trailer for the return to base:
We piled the windows / parts / detritus into the back, a scrapper hauled it away the next morning, and that’s the end of our Sienna’s story.
Toyota sold a lot of Siennas, which means the Hot Topics list over on the right will show a need for Sienna ABS trouble codes long into the future.
In fact, the adjacent motel slot had a disconcerting sight:
I think it was a 2001 model, but …
A flash gun is hard to beat for straight-up nostalgia:
This Zeiss Ikon Ikoblitz 4 is in fine shape:
And no more grubby than one might expect after all those decades:
I distinctly remember Flash Guide Numbers:
The red dial scale has the Guide Numbers (aperture × feet) and the lower black dial scale gives the lens apertures. The manual doesn’t mention the black figures above the red Guide Numbers; they’re metric Guide Number (aperture × meters), which would have been obvious back in the day.
The tidy shell slides off when you release a latch in the back:
Then the reflector unfurls:
Mirabile dictu, the previous owner removed the 15 V “hearing aid” battery (Eveready 504, 60 mA·h in the 504A alkaline version) before storing the flash, leaving the contacts in pristine condition:
A 3 V CR123A primary lithium cell snaps perfectly into the battery holder, which I define as a Good Omen: a dab of circuitry could turn this into self-powered and highly attractive Art. This would be one of the very few applications well-suited for the coldest blue-white LEDs.
One could adapt an A23 12 V alkaline battery (33 mA·h) to the holder, at the cost of half the capacity.
The silver shield just to the left of the battery conceals a 250 μF (!) nonpolarized capacitor.
One could build a bayonet-base (GE #5 / Press 25) adapter or poke a doodad with a 9 mm cylindrical base into the M2 bulb adapter (unrelated to my M2 printer):
Herewith, the Zeiss Ikon Ikoblitz 4 – Instruction Manual, should you need more details.
This hardware may be a progenitor of Gibson’s vat-grown Zeiss Ikon eyes.
Spotted this at the top of a motel stairwell:
The antennas face away from the hatch, so it’s not as if the RF would shear you off as you climbed through:
I wonder if the hatch atop Vassar Main sports a similar warning …