I think this is a good point, insofar that how bacterial resistant the stethoscope is relevant. Stethoscopes made of stainless steel are going to beat anything 3d printed by a significant margin.
It definitely doesn’t help that prints from filament printers are very porous, 100% infill or not. Maybe sealing it with epoxy after printing would help?
This seems like another case where the hobby has discovered the 3d printer hammer and forgot that cnc tools (lathe, milling machines) are often better and faster for the job. Or if plastic is what you want injection molding is something you can do on a hobby scale and it is much better (but unlike the others this isn't something you can go from CAD to widget)
In my experience it is very rarely the case that setting up machine tools is faster than 3d printing. And even when it's faster, it's not less trouble. And you have to go and acquire materials in suitable shapes and sizes, and deal with cleaning up chips and offcuts, and deal with deburring and cleaning the part after it's finished.
The 3d printer is always ready and always has material in the right shape. It doesn't make a lot of noise, it doesn't make a lot of waste, the parts come off the machine clean and dry and ready to use. It's really hard to overstate the convenience of 3d printing.
I doubt the diaphragm which actually touches the body, or the flexible tubing of expensive scopes can be sterilized in an autoclave. This diaphragm here is cut from cheap plastic and easily replaceable, the tubing is silicone. I do not believe the flexible tubing on the expensive ones is usually silicone and replacement diaphragms probably cost as much as this whole DIY scope. Metal is resistant to heat, but porous still, so disinfecting with alcohol isn't enough, if you got nasty on it. Never in my life have I seen any doctor pulling a stethoscope from a sterile paper bag. It's likely not as clean as you want it to be.
I believe, in practice you should avoid putting it directly onto the heart, keep a layer of healthy skin in-between. Given the scope of the scope, that may be acceptable, considering the alternative may be direct skin2skin contact with your patient...
But yeah, generally, 3D printed objects are not easy to sanitize properly.Eg. their porosity makes them not safe for repeated food contact. I mean, the glass transition temperature of ABS is 105°, so you could dip it in boiling water, but that's not enough for making it sterile and consequent water inclusions are a welcoming place to start a new family a few hours later for any remaining spores. You could try fractional pasteurization and heat drying, in a pinch, at the end of times.
I seem to remember the fatal flaw with harvester AI was that once a harvester was returning to the drop-off building, it would "claim" it, and so any other harvesters would just do a dance around the building until the the first harvester arrived. As a result, a harvester that was further away could block closer trucks if it just happened to fill sooner.
Same, and agreed. It’s also annoying for everyone else who has to listen to the same few unit movement confirmation sounds hundreds of times in an hour.
TL:DR Ultimately I settled on incredibly smooth, linear pre-lubed hall effect/TMR switches, and that’s what I strongly recommend to others.
I played around with different mechanical switches for a bit, getting a few switch testers and hemming and hawing about which would be my chosen one. Honestly most all of it will be better than your typical $20 rubber dome dell e-waste. I got a Leopold keyboard with tactile mx clears as my first “real” keyboard and it was definitely an improvement and enjoyed it for a few years.
However after my final xbox gamepad once again started getting stick drift, I moved one with Hall effect sticks (gamesir). It was so much better that it resulted in me wanting to try a hall effect keyboard with more customizability. Took a chance with a Keydous NJ98-CP V3 HE (pale green) because it was well reviewed and priced well enough to take a risk on. I love it so much I got my sister one.
It turns out what I truly loved about old IBM beamspring switches wasn’t so much the click, but the smoothness. Typical mechanical linear switches with electrical contacts feel scratchy to me which I find repellent. Oddly enough, having a tactile bump to overcome somehow hides that. But a lubed Hall effect switch is as low friction as you can get and I love them. It’s literally fun to type on, and works great for gaming. As a bonus, it’s pretty quiet too, making it less obnoxious for others to be around.
You’ll need to adjust the activation point to prevent accidental activation when resting your hands, but that’s basically it as far as doing things differently.
As a side note, my mouse is a keychron M5, a “vertical” mouse, which works quite well and supports the higher polling rates I’m looking for. Also highly recommended if you need to give your tendons a break. Personally I think Razer has slightly better algorithms for smoothing and accurately translating my movement intentions, but this is only something I notice when “playing” Excel, and it’s not enough that ergonomics don’t easily win out.
The general consensus from I saw from discussions years ago was that scanning of your local files was not something that happened (which would be detectable and eventually discovered and called out by someone). Doing so would also require the dll which contains how photodna works, which Microsoft does/did not want out in the wild and requires an NDA to use. Secretly exfiltrating your files for scanning would get Microsoft in legal trouble.
The obvious alternative of course, is openly and aggressively getting users to agree to uploading their files to Microsoft’s computers (OneDrive), which are scanned.
However in the age of machine learning, copilot and the like, I would not be surprised if local scans start becoming a thing, since offering classification of objects in photos is a perfectly reasonable thing to offer from Microsoft’s point of view, and of course CSAM detection can come along with that.
Long ago, for a few years I would occasionally buy ebooks from Amazon when it was trivial to strip the DRM with basically my credit card number and a script.
Once they started trying to lock things down further, I completely stopped buying, moving to piracy mostly, and occasional scanning of physical books.
Being more technically capable than typical, I’m hardly a normal customer to try to target, but the way I see it all this does is piss off the minority who care and are capable of getting around restrictions. Those who don’t care or aren’t capable will just continue getting cluelessly fucked over as always. These measures less about effectiveness, and more like a money themed emotional support affirmation for someone in a suit. It helps them feel like they are accomplishing something, but that’s it.
I haven’t checked lately, but I expect that “AI” tools that easily and accurately rip and format data from a picture feed of a screen will become the way to go for bypassing whatever clever encryption schemes come along. This also has the benefit of ignoring the steganographic tracking data hidden in paid files, making piracy ultimately easier for the uninformed. This sort of thing was always possible, but was a bit janky and laborious.
Same here - I'll only buy books I can read on any device of my choosing. Kindle+dedrm was an option. https://www.kobo.com/gb/en/p/drm-free is another option I have used a lot. But if it's not available, I will go to the modern day library of alexandria. I will not pay for crap that will just stop working in a few years - a book can sit on my shelf for 15 years before I get around to reading it.
In the agriculture world, application of harpin proteins (https://www3.epa.gov/pesticides/chem_search/reg_actions/regi...) can be used to help treat diseases by inducing a defense response. Mind you, it’s not a standalone treatment, but helps make applications of fungicides and the like far more effective.
Pathogen defenses can roughly be thought of having a metabolic cost at the very least. Meaning if there’s no selection pressure (such as death) otherwise, then it often ends up being more optimal to not have a defense active until it’s needed.
Problem is we have a global distribution system that is forcing organisms that have previously evolved into an equilibrium with the disease complex in their area, to encounter multiple novel threats in rapid succession. Like how aggressive species of downy and powdery mildews are now everywhere in the US. Giving plants a boost by inducing defenses early on helps them resist the onset of infection and helps treatment succeed.
I wish there was some kind of desktop application that I could sit down and locally organize my data into, allowing me to keep a full quality source while syncing a copy to naturalist for others to benefit from.
As it stands, I don’t really have a system in place, and I don’t want to put a lot of effort into a lossy (assets get compressed and stripped of metadata) online project.
iNaturalist would agree with you; they explicitly say[1] it's not meant to be the primary source for your photos. Users generally fall into a couple broad camps:
1. Mostly use the mobile app, and take photos and upload observations directly from there. Local photo collection either isn't a priority or is backed up by their phone's cloud sync.
2. Mostly use inaturalist.org via a desktop browser, with either a standalone digital camera or mobile photos synced to desktop. Local filesystem (hopefully plus backups) is the source of truth.
I have been working on a desktop application[2] with a long-term goal of full bidirectional sync, and a secondary goal of offline usage. The current feature set is fairly modest and read-only, though, focusing on organizing local photos using data from iNat.
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