"Why is this better than pumping electricity through the wire until it melts, ala a MIG wire welder? I don't think I've seen one of those hooked into a CNC or 3d-printing rig, but it would be nice to understand why not."

"I have the kaweco liliput, which looks maybe as good as this one. Similar pricepoint, but without such a solid guarantee. The last 3 or 4 brass pocket pens I got have all failed at the closure - the part that holds the cap to the pen body. This was after just a year or two of rolling around in my pocket, getting the occasional bit of sand stuck in it at the beach, and of course getting opened and closed a couple times a day on average. I'm very interested to hear how this magnetic one holds up over time. "

"So I have a kaweco sport fountain pen, and I'm really thrilled it has held up for 2 or 3 years now, rolling around in my pocket while I'm working, walking, on the playground with my kid, etc. I'm a bit disappointed the contact between the threads on the shaft and the inside of the cap is made of plastic - it doesn't fit securely, and I have to be careful to not turn it too much. Other than that, it's as solid as it looks."

"My wife came back with this, and while I was initially impressed at the beautifully molded clear outer lid, and yes it achieves all the stated functionality, it leaves me wondering: why not go the extra step and include a vacuum pump? No not a clunky, expensive, complex electric one - a simple, hand-pump like the wine vacuum pump I use whenever I don't finish a bottle of wine. Furthermore, why can't I buy a valve like that which I can just drill into any of my plastic or metal containers that I want to be vacuum sealed?"

"Yet another plastic replacer that is actually just a filler bound with plastic. Not totally a scam, but would be a lot more accurate / less misleading to say it reduces the amount of plastic. "

"So if I take this on a long backpacking trip, will I be able to walk farther before I get fatigued?"

"um how about a write-up of reverse-vending machines - that I only just heard of for the first time. And ideally their whole supply chain - do they also use the same trucks to bring stuff to/from the same factories? Where does the actual recycling happen?"

"You want microplastics in everything you chop, every time you leave even the tiniest cut mark? Because this is how you infuse your gut with microplastics. Not to mention the credit card I thought I was saving the environment from by using it to scrape my cast iron - now I'm just grinding it up into toxic dust, instead of waiting for that to happen in a million years when a river runs through the dump. "

"So how does this compare to sunlight? My guess is that most viruses and bacteria are toast in direct sunlight for 10 minutes."

"Why is this any different from glass-fiber-reinforced parts? I get it that "fiberglass" is often unstructured, but it can be structured - for a few months, I worked for a tiny outfit making carbon fiber airplane parts by hand (back in Dallas in the early aughts), and we sometimes used glass fiber that looked just like those carbon fiber sheets, except clear/white. Even if non-directional, seems like all the resin-filling and forming steps would be the same as as a fiberglass/resin composite. What am I missing?"

"Saw way more badass looking tires for rolling on snow and ice on reddit and had to come back to share it https://www.reddit.com/r/funny/comments/lpv5ob/snow_tyre_naah/ - maybe somebody could find a 1 meter diameter rotary burr and put it on the back of a motorcycle, next?"

"Ok but what cheap utility wall-hooks did you find? Am I the only one who can't stand paying $14 to home depot for a piece of bent steel with a couple holes in it? Out on a farm is not the only place you want to hang a vast array of stuff on the wall - in fact I'd say the space constraints of city living make it equally compelling!"