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They’re sort of similar, but also opposite. A convertor twists up the pen pulling ink into the chamber. A piston twists down the pen creating a vacuum first. When it gets to the bottom the vacuum is exposed to the nib and the ink is rapidly sucked up. I definitely find the piston less messy.


Vacuum based filling systems are called “vacuum fillers”, like Pilot Custom 823.

A piston pen is exactly same as a converter one. For example Pelikan M605, Twsbi Eco, Lamy 2000, etc.

Vacuum pens are nice, but need more care during filling and need deeper bottles since the process is somewhat more violent.


>Now if you want to try a few different inks, do that next. Maybe get a second pen, see whether 'fine' or 'medium' sized nibs is more your thing.

And that’s the moment you fell into the trap.


The US State of California WAS Mexico in 1848. Much of California still is Mexico. The personal notion of "mother soil" may have nothing to do with current political boundaries.


It's pretty simple, Trump hates Muslims more than he hates Jews ("Fine people on both sides", Kanye & Feuntes, cancelling funding for domestic anti-semitism programs...). This is the Muslim ban under a different guise.


Yes I guess it is pretty simple in your mind.


Isn’t that exactly how Amazon started?


Yes, that’s the meta-joke.

And Facebook too, which is the META-meta-joke.


Everyone knows that six is the most boring number. https://youtu.be/G4OTRRmyTAA?feature=shared


>a $40 roll of thin gauge solder (which will last the rest of your life)

I dunno, I'm 56 and I'm about to finish the roll I bought as a teenager. (Albeit bought in pre-RoHS times.)


Hopefully your affairs are in order…


should things be in flux to be in order?


I've been going through a 1-2lb of solder a year recently, and find myself needing multiple thicknesses and types. But, I've been repairing guitar amps, organs, building lots of microphone preamps, outboard rack gear, digital projects, etc. Kester solder rocks.

I do remember my first pound lasted about 15 years though...


> Albeit bought in pre-RoHS times.

Yeah. Old high lead content solder is way nicer to solder with than modern stuff.


Since no other navy nukes have chimed in on this thread to speak about ETMS—eutectic point is a huge piece of the puzzle and there are tradeoffs for selecting between 60/40 and 63/37. Fillets suck, bifurcated terminals are worse.

For any other Navy nukes, I wanted to link to a good reference on what ETMS is (was?) but couldn’t readily find anything. If anyone has a reputable link to publicly available course material on their solder grading rubrics or the 7-step, I’d be interested.


Not what you're asking for, but I have this from NASA in my bookmarks:

"THROUGH-HOLE SOLDERING GENERAL REQUIREMENTS"

https://workmanship.nasa.gov/lib/insp/2%20books/links/sectio...

This one might be relevant too (but it's too long for me to read through right now to confirm):

"Military Standard - Standard requirements for soldered electrical and electronic assemblies (1989)"

https://electromet.com/wp-content/uploads/2015/09/Electromet...


Was there an actual safe way to deal with this stuff besides maybe wearing a gas mask while you were working with it?


Why? Lead solder doesn't evaporate. The risk was always in recycling and maybe eating without having washed your hands. But you don't breathe in the solder, only the flux (which is even more toxic in lead-free solder applications).


we had overhead vacuum suction on all the terminals in the training environment. On the sub, not so much, but if you’re soldering^ underway, it’s because shit has hit the fan so badly that a bit of lead inhalation is the least of your worries.

edit: if you’re ^soldering *Nuke* stuff underway, it’s because things have hit the fan, and that’s the whole point of ETMS. Other rates also solder underway and might also use (did use) lead, and perhaps none of our inhalation was warranted.


What a pointless blog. “I don’t know why Thunderbolt exists. Here let me daisy chain PCIe and Thunderbolt devices to try and break it. Oh, it works, I must be cursed.”


So surprised I had to scroll too far for this reply. I actually work for one of the major US carriers. My job is literally to figure out how to apply the technical capabilities of 5G to solve business problems. NONE of the US carriers have figured out how to actually deliver network slicing beyond, say, reserving capacity for first responders. And, as you say, it’s about capacity, not speed per se. We want to make sure that, say, an AGV can offload kinematics to the MEC and navigate in real time in dynamic environments. The poster child for network slicing is the surgeon doing telesurgery over a 5G network (But that’s likely to remain a poster child). We’re figuring out how to provide network slices for autonomous vehicles, mobile teleoperation, etc., in all use cases we’re examining it because something BAD could happen absent guaranteed capacity. I have never ever heard anyone talk about using network slicing for QoS for consumer apps.


iOS 17 added explicit support for 5G slicing for QoS in consumer apps: https://developer.apple.com/documentation/network/nwparamete...

Android 14 added 5G slicing upsell for consumer apps: https://source.android.com/docs/core/connect/5g-slicing#5g-s...

This is imminent.


Moreover, for a quoted company, Sarbanes Oxley makes it difficult to spend money on this kind of activity.


How so?


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