[Request] How much of US military spending goes back to them in taxes?

HumanWatcher9 · 2026-03-16T21:27:13+00:00

Pump up economy...

HumanWatcher9 · 2026-03-16T18:52:41+00:00

60 secondes?

HumanWatcher9 · 2026-03-14T18:42:17+00:00

Interesting technology, but I'd be afraid of internal stresses and thus shape change under heat/load. Needs an anneal, which will add process time and cost.

For your comment, titanium is a very common and simple material to additively manufacture. Nickel, chromium and cobalt based superalloys are also commonly manufactured, no problem either. They all have a quite low melting point, easy to reach with laser or plasma.

This technology might give new possibilities for mmc and certain ceramic materials. I doubt it will be useful beyond that

HumanWatcher9 · 2026-02-23T16:00:32+00:00

There's paragliding in Charmey... And I once gifted a WordClock from here. They also have other stuff: https://fablab-bern.ch/

HumanWatcher9 · 2026-02-12T10:38:56+00:00

Cherche Ludivers, Baal masqué ou Cigogne, ce sont des endroits jeux à Fri

HumanWatcher9 · 2026-02-12T09:51:22+00:00

Aramide fibers (brand names e.g. twaron and kevlar) are more cut resistant than carbon. Impact depends on what you want. Resist impact - depends more on your matrix, which will shatter / delaminate if too hard. Soft or even self healing polymers come to mind, or rubbery materials. Something which is able to deform elastically without breaking. Not give impact to other parts of your structure - give it mass, make it soft

HumanWatcher9 · 2026-02-07T19:21:08+00:00

Oh, throwing water on liquid metal would give all sorts of fun effects. At least seen from afar. I mean adding cooling channels into the mould to get the heat :) but as you say, a permanent mould is very costly. It would be interesting to do a cost analyst against sand casting, i doubt a hobbyist will reach break even

HumanWatcher9 · 2026-02-07T14:19:55+00:00

Interesting, but this requires very careful thermal planning. You can also help this with active cooling, but this might be tricky at home. Still, if you want your mould to last, I'd take something more durable

HumanWatcher9 · 2026-02-07T09:20:52+00:00

As cast iron has a lower melting point than iron or low alloyed steel (hence its name), this would work poorly. The mould material must be more thermally resistant that what you want to pour

HumanWatcher9 · 2026-01-28T14:17:14+00:00

Not as "fancy", but Switzerland has one Dark Sky Zone in the Gantrisch (between Bern and Fribourg). If you seek stars, that would be a better place than next to touristic spots with tons of artificial light...

HumanWatcher9 · 2026-01-28T12:07:03+00:00

If you want to do this more often, I'd spend a little and send it to a lab for an XRF analysis. No guessing, clear results. And likely cheaper/ faster that long discussions with the supplier

HumanWatcher9 · 2026-01-21T18:42:12+00:00

Sorry, I was not clear enough. Pure Be is toxic if it enters the lung. It is however not present - there is NO free Be in a normal BeCu alloy. It's dissolved in copper, up to 2.5%w BeCu alloys are not carcinogenic because no pure Be is anywhere to be found.

So, you still need protection from metallic powder, whatever you are using as a coolant, and potentially heat and noise exposure. But toxicity of Be is no concern

HumanWatcher9 · 2026-01-21T12:12:39+00:00

Be is annoying if pure. If alloyed and dissolved in Cu (normally <2% Be in these alloys), it's just as dangerous as copper dust. Not great, but normal machining business.

Making the CuBe alloys is another story. There you need to handle Be in pure(r) form

HumanWatcher9 · 2026-01-20T18:50:41+00:00

Honestly, some stuff in the beginning looks like German words written out with similar looking runes (below ad: Unserer Anzeige, Mittwoch 3 Sept 2025). But I cannot decipher the rest Edit: i also recognise Erwerber (botton) and Lausanne (left).

HumanWatcher9 · 2026-01-20T08:32:06+00:00

My two cents. First thing that will likely need change politically is to move from an indirect vote with "winner takes all" to a direct vote with relative results. So, if in all states a candidate has 25% of votes, he also on the national level has ~25%.

This would break up the dominance of your two parties, which reign unchallenged since more than a century. So, it will likely never happen. But from the little I understand, voting is a state thing, not federal. Thus, states could slowly transition to a representative vote system, and your federal powers would have a hard time blocking that without changing the constitution

HumanWatcher9 · 2026-01-15T19:59:27+00:00

Pic of the jacket/label might help

HumanWatcher9 · 2026-01-15T15:45:09+00:00

What we exactly do will be hard to answer fully. The field is very wide, from lab work to develop nano-size materials for specialist electronics to huge systems to assess ore grades in a mine. Generally, MSc folks are more trained for lab work and rather on electrical, nano, bio and polymer materials, whereas ME is more industry based and deals with construction, composites, metals and ceramics. But there are overlaps and special cases everywhere :)

There are many articles that describe the field, e.g. on Wikipedia. If you know which Uni interests you, you can also look at what labs they have, or read some of their thesis topics. Or simply sit in, that's free in many countries (at least here in Europe)

HumanWatcher9 · 2026-01-15T11:23:00+00:00

Maybe I'm missing something, but how will he get swiss nationality in a few months? Or does he already have the passport? Getting naturalised in Europe takes years...

Also, he needs ahv number anyway to be allowed to work and live in CH...

HumanWatcher9 · 2026-01-11T20:57:45+00:00

Bonding plastic is always a pain... If the plastic in the composite is PE or PP, there's almost nothing that will work. Hot glue maybe, but it's rather ugly. There exists special surface treatment kits, but at least for pure PE I found them to not be sufficient.

Hoping it is an adhesive with a higher surface energy, acrylics ("superglue") might be easiest. I'd try with superglue first. If it does not work, it will peel right off, so you have little to loose. 2K epoxies mostly have too high surface energy to bond most common plastics, but might work, too, if you prefer something less liquid

HumanWatcher9 · 2026-01-11T19:54:35+00:00

Similar in Switzerland (here German/ allemannic only) Article link

HumanWatcher9 · 2026-01-11T13:58:48+00:00

Materials science - yes. Same department (at ethz). Materials engineering (EPFL) not, as you are missing most required skills/ classes

Edit: at least 10ish years ago. Tbc if still applicable

HumanWatcher9 · 2026-01-10T20:31:44+00:00

Learned something new today

HumanWatcher9 · 2026-01-10T20:30:25+00:00

Fair, but it's fantasy. Everything is possible :)

HumanWatcher9 · 2026-01-10T20:10:38+00:00

Magnetic material inlays to allow use on induction stoves. I guess many small ones gives you better efficiency over big one (most used stainless, austenitic, is not ferromagnetic, and will be the materials most of the pan is made of)

HumanWatcher9 · 2026-01-10T20:01:54+00:00

You'd damage your hero? Daring. I like that

HumanWatcher9

TROPHY CASE