Ed Nisley's Blog: Shop notes, electronics, firmware, machinery, 3D printing, laser cuttery, and curiosities. Contents: 100% human thinking, 0% AI slop.
As I rolled into the Stewart’s Shop on a milk-and-eggs run, a plume of smoke spiraled out of the cigarette butt station near the door, way off on the left side:
Smoldering Cigarette Dump
A closer look:
Smoldering Cigarette Dump – Detail
By the time I unhitched myself from the bike and reached the door, two smoke jets squirted from the top and a pall of breathtakingly foul smoke filled the parking lot. I mooched a big cup of water from the folks behind the counter and pulled off the container’s lid, which let in enough oxygen to ignite a full-up fire in the heap of cigarette packs, plastic wrappers, butts, lottery tickets, receipts, and other combustible junk atop the sand bucket in the base of the butt dump. Sprinkling the water over the blaze knocked it back; I replaced the lid and declared victory.
I always take a shower after returning home from a ride, but, this time, we also ran all my bike clothing through the washer right away.
Phew…
Verily, it is written: Kissing a smoker is like licking an ashtray.
They’re glass electrometer resistors from late in the Cold War:
Russian 100 G electrometer resistor
That one presents 100 GΩ between its lead wires, which would count as open in any other circuit I’ve ever built.
The assortment arrived much richer than advertised, although I’d be even happier with a few more 10 GΩ and a few less 100 MΩ resistors. The 1000 GΩ = 1 TΩ resistor in the upper right seems absurd on the face of it, but there it sits.
I have no way to measure these, other than to build an electrometer amp and see what happens…
A semitrailer load of scrap metal pulled into an I-90 rest stop just after we arrived:
Metal scrap trailer – Cutting edge
Apparently, they dump the scrap into the trailer from a great height and, sometimes, a bar can gash the aluminum side wall. That slice obviously predates the current load, but you can see how it happened: dump a load atop a bar leaning against the side and you get a giant metal shear.
The trailer also had several puncture wounds:
Metal scrap trailer – Puncture wounds
I didn’t notice the circular feature at the bottom center until I looked at the picture, but it certainly reminded me of a bullet hole in glass plate. Close inspection of the original image suggests it’s a welded stress relief border around a drilled hole, perhaps with a boss on the inside of the trailer:
We spent a pleasant evening hour walking & sitting on the town beach in North East PA on our way back from Detroit:
Sunset over Lake Erie – North East PA
The entire area smells strongly of the grapes that grow well in the hilly terrain south of Lake Erie. A local expert said that Welch’s (a major local employer) moved its CHQ to Concord MA to put a better hometown name on the company’s letterhead; being based in North East evidently didn’t have the same ring.