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John Bump
Works at Texas Instruments
Attended Reed College
Lived in denver
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John Bump

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There's this website, https://habitica.com/static/front -- and their thing is you set up all the tasks you have to do at work and home and then get points and stuff for accomplishing them.  Totally cool for procrastinators like me.  I am, however, questioning their methodology, coz I get more points for doing the dishes than I do for stabbing myself with a sheep-brain-coated screwdriver and making a next-business-day appointment to get a tetanus shot.
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Are you volunteering your carpet?
(again?)
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John Bump

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Dudes.  I just stabbed myself in the thumb with a screwdriver I was using to pry a sheep brain out of its skull.  This is how horror movies start.  #IwishIwereJoking
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+Christine McAndrews Scheu
 It's glass, I cut other meat on it.
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John Bump

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It was cloudless and 70F today, as it's supposed to be all week long. Of course we went for a lunchtime bike ride, despite the huge amounts of snow.  First half of the ride was fine, quiet, the two new guys managed to stay up with the leaders, and then the wind came up like yowzers.
Like, I'm used to seeing paper cups bounce down the street.
I'm not used to seeing an orange peel bounce down the street.
We had to battle our way down a hill, did a crosswind climb, and then had the wind at our back for the rest of the ride. It was glorious.
We were hauling down a long hill when we crossed past 50 mph. The two newer guys both started getting extremely nervous. Totes legit to find that uncomfortable. I'm always blasé about high speed, but I wasn't making any attempt to go any faster, I'll admit.
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Gusty crosswinds are terrifying.  Gusty crosswinds when the opposing traffic is upwind and consists mostly of trucks is time to consider alternate routes.
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Internal spline, cut the same way.  Doing this any other way on home shop equipment would be difficult.
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So impressive. I also need to find friends with planes. :)
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I'm cleaning the garage to return it to its woodshop state rather than its current engine rebuilding state.  I found this old cigar box, full of silver foil and pressure gauges.  The red banner says "notice the hole in the top of the head."
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Spam, Spam, Spam, Spam...Spam, Spam, Spam, Spam...Spam, Spam, wonderful Spam.
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When I'm doing something intensely physically demanding, my brain sometimes starts bringing up stuff into conscious thought that just makes no sense.  Like: the other day, trying to stay with a pack of riders on a hillclimb at a pace that was simply too hard for me to maintain, but if I dropped I was never going to catch up, and suddenly I realized that I was thinking, "monkey, monkey, monkey, ev-ry-WHERE!" and I was all "what on earth is my brain doing?"  Well, turns out it was singing the lyrics from this.  https://www.youtube.com/watch?v=T1I-tubDYyA
Sure enough, "monkey, monkey, monkey, everywhere!"
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+Coyote Jay +John Bump If I ran the universe, Confutatis Maledictis from Mozart's Requiem would be the mandatory ear-worm for all near-death events.

https://www.youtube.com/watch?v=CQUFQ_N0JI8
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John Bump

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Every time this guy starts running around outside the windows at work everyone's all "The black squirrel!" and my brain silently adds "of Inlé" and it seems so much spookier.
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+Thomas Scoville​, do you spend much time reflecting on your demeanor as a condescending prick? I recommend it.
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Liberated from private share: JB Saunders evicted, out of business.  We lost Gateway in 1999, Tiger Electronics in 2008, Fistell's (which had been open since the 1940's) in about 2010, and now JB Saunders.  There is one component-level electronics store in south Golden, with limited selection.  +Oleg Mazurov +Sebastian Kuzminsky +Scott Converse 
http://www.dailycamera.com/boulder-business/ci_29496638/longtime-boulder-specialty-electronics-supplier-evicted-inventory-gets
Around 3:30 p.m. on Monday, an off-duty Boulder County sheriff's deputy was just finishing his post overseeing the eviction of JB Saunders Company from its 4,000-square-foot storefront on Sterling Circle in Boulder.
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Man, that's sad.
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For a somewhat ambient/electronic group known for quiet, complex, rhythmic, hypnotic arrangements, Godspeed You! Black Emperor is really, really, really, really loud in concert.  Like, way louder than TOOL or Queens Of The Stone Age.  I wish my earplugs had had earplugs.
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Missed ya, man.
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For any lambdaMOOers who are still on G+: we just got news that Firesign lost a long battle with cancer.  Wake in the Living Room going on right now.
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Somewhat, +Brundizzle B -- but a lot fancier.  You can try a MOO: telnet lambda.moo.mud.org 8888 or a MUD: telnet stickmud.com 7680
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Today I did a bit of experimenting with using a lathe as a metal shaper.
A lathe rotates a piece of material, and shoves a basically static tool into it to cut away unwanted material. A mill rotates a tool, and shoves it into a basically static piece of material, to cut it away.
A shaper doesn't rotate anything. It traverses a tool across a workpiece. It's like an unrolled lathe.
It's possible to make anything with a linear travel into a shaper, so today I decided to try it with the lathe.
Pity the pictures aren't more in focus.

I ground a bit of tool steel with a profile like a rectangular keyway, and mounted it sideways on the lathe toolpost. That way, as I move the carriage left and right, the tool slowly peels off layers of metal on a piece of metal clamped in the chuck. I engaged a pin on the chuck so it can't rotate.

The best setup for this, I learned, was with the edge of the tool that's removing the material more or less in line with the point at which everything's attached to the carriage. If the cutting edge is closer to the workpiece than the attach point is, the edge tends to cut more deeply as it deflects, meaning a positive feedback that leads to very high stress. Oppositely, if the cutting edge is further out than the attach point, it bends out of the cut, which is good because it doesn't bind but it does tend to cut a ramp rather than a slot unless I take like a dozen cuts at each depth.
As a result, after a couple of cuts I ended up doing the rest of the cutting on the backside of the lathe, because the offset of the boring bar I'm using is towards the back of the lathe.
I could advance about 0.003 inches per cut, peeling off big curls, taking three or four cuts per advance, and it did a fine job.
The lathe gears have two keyways, one on each side, and now I can cut something that can fit them.
One thing a shaper can do, that is difficult to do any other way in a home workshop, is cut an internal spline or gear. That's one of the eventual aims of this project.
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"It's like an unrolled lathe."

<3
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Union Station Restaurant, associated with The Kitchen, good food, great neon, and I particularly like that they've made lamps out of old power insulators.
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The "Jelly Jar" light fixture is an old standard in the electrical industry.  It's been around for over a hundred years in various forms.   I've installed literally hundreds of them over the years in wet locations outside and underground in steam tunnels and electrical vaults.

A light fixture that uses actual Mason/Ball jars instead of the typical ribbed or plain domed screw in "jar" would be pretty kitschy, but sort of neat in its own way in a restaurant like this.  
The threads on the mouth of the typical "jelly jar" fixture are different than those used in canning jars, so the entire fixture casting would have to be designed specifically to accept a mason jar.  But it would work.  A clear glass jar is a clear glass jar.  

The only issue I would see is that the threads of a canning jar are very sparse.  They are really only designed to keep the metal ring on to secure the vacuumed-on ring.  There are only two threads that are about 3/8" apart at a very steep pitch.  There might be a problem keeping it from loosening & unscrewing over time and simply falling off and breaking.

A Jelly Jar globe has about 6 threads over about a 1"distance  in a shallow pitch (That'd be 6 TPI or thereabouts.)

So it takes about 6 turns to thread the jelly jar globe onto the fixture.  They are designed to be a little tight too, so they don't unscrew very easily on their own. 
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Education
  • Reed College
    chemistry, 1986 - 1988
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Random, smellsofbikes, jens, solipsist
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Mad scientist
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John, aka Random, aka smellsofbikes, aka several other things.
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Mad scientist. Not crabby, just at an oblique angle to reality.
Work
Occupation
electron wrangler
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armor, bikes, chemistry, desiterata, engineering, fencing, gizmology, house repair, injuries &c.
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  • Texas Instruments
    present
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Previously
denver - loveland colorado - leadville colorado - portland oregon - seattle washington - boise idaho - fort collins colorado - eugene oregon
They had what I needed, found and brought it out fairly promptly, and helped me load it. They have a great assortment of wood and hardware besides.
Public - 2 years ago
reviewed 2 years ago
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