metal_am

7 ms·

31.
by metal_am 3y ago
I’ll bite. The capability in the US to do large castings and forgings is basically gone. Good luck getting anything with a lead time of less than a couple years. In some cases, it simply can’t be done. That’s why we’re seeing so much invest
32.
by metal_am 3y ago
Pretty much! Also like an electron microscope. TWI says they can do 100kW
33.
by metal_am 3y ago
It's both. "The new two-stage High Pressure Turbine section adds advanced coatings for cooling metal parts that will enable the same metal temperatures as today’s engines despite hotter gas path temperatures." https:/&#
34.
by metal_am 3y ago
Tuna can’t pump water over their gills. They can never stop swimming
35.
by metal_am 3y ago
Mouse Without Borders has been ubiquitous on all the SEMs I’ve used (where up to three computers can be used together). I’ve never had any problems with it. Now, the SEMs on the other hand…
36.
by metal_am 3y ago
I wouldn’t say it’s blocked in Tennessee. KUB (the Knoxville utilities company) recently introduced fiber
37.
by metal_am 3y ago
Grade 1 is still pretty common for ultralight backpacking items like pots and pans due to its ductility.
38.
Mint, One of the First Budgeting Apps, Is Shutting Down(nytimes.com)
1 points by metal_am 3y ago|1 comments
39.
by metal_am 3y ago
Must be library dependent. I only get 5 movies per month.
40.
by metal_am 3y ago
You'll definitely get asked about it, but there is absolutely no requirement to join to buy anything from REI.
41.
by metal_am 3y ago
When people talk about weight in this context, they really mean "base weight" not including consumables or worn clothing/shoes. The general rule of thumb is about 1lb/500g of food per day.
42.
by metal_am 3y ago
They’re usually actively heated/cooled
43.
by metal_am 3y ago
A lot of the code used in scientific computing cannot be vectorized because the latter loop is dependent on the former loop (like time stepping in a simulation). It’s not really a programming style preference.
44.
by metal_am 3y ago
There are some great government resources for books. Your state almost certainly has something that works with the Library of Congress. https://www.loc.gov/nls/ is a good starting point. You can also search something l
45.
by metal_am 3y ago
It might be a bug, but it’s really interesting to draw with two or three fingers.
46.
by metal_am 3y ago
The article somewhat downplays the historical understanding of this. (It's understandable! This is a dense topic!) The impact of spin states has been known for a looong time. My first introduction to the topic was Zener's 1955 pap
47.
by metal_am 3y ago
Forms and tooling for composites are a big one in the aerospace world. Keeps dimensional stability better through autoclave cycles.
48.
by metal_am 3y ago
Grad student contracts usually prohibit you from having another job.
49.
by metal_am 3y ago
This is a thing at US universities. There are pure teaching professors, pure research professors (who might teach one class a year), and others who do both.
50.
by metal_am 3y ago
How about something like MAGMA?
51.
by metal_am 3y ago
Farming is a hard life. There are a lot of sources of stress: Time - If something needs to be harvested immediately, it's not uncommon to work through the nights using the lights on the equipment. There's no such thing as set hour
52.
by metal_am 3y ago
Film cooling and coatings are what allow operating temperatures above the melting temperature. That doesn’t mean the metal is above its melting temperature.
53.
by metal_am 3y ago
It’s definitely an expense. But this doesn’t fully explain why nuclear is expensive. -Current nuclear reactors aren’t nearly hot enough to need single crystal turbine blisks. We’re talking on the order of 300°C. -Coal power plant routinely
54.
by metal_am 3y ago
Yes! It runs pretty well on an M1 Mac edit: there’s a .dmg on the GitHub
55.
by metal_am 3y ago
Just because something is reflective in the visible light spectrum doesn't mean it's as reflective in other spectrums, say near-IR.
56.
by metal_am 3y ago
Platinum
57.
by metal_am 3y ago
To give some context for other parts of the country (TN): Gas is $2.92 and electricity is ~$0.11/kWh. 10,000 miles / 32mpg * $2.92/gal = $912.50 in fuel and 10,000 miles / 3.12mi/kwh * $0.11/kwh = $353.00 in el
58.
by metal_am 4y ago
OpenFOAM is open source CFD software
59.
by metal_am 4y ago
You can get kinda close to that with OctoPrint running on a RaspberryPi. You'll still have to slice it manually, but you can upload the gcode and start the print from another browser tab.
60.
by metal_am 4y ago
Laser powder bed fusion (L-PBF) of polymers was only in its infancy in the late 80s. This was research out of UT Austin that would eventually lead to DTM. Proper L-PBF of metals (fully melted, fully dense parts) didn't come about until

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