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Snowy posted:I thought it had been established that Ali sunglasses had decent uv protection, am I misremembering? That's literally literally like saying "I thought it was the consensus that German cars are red".
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Aug 29, 2022 10:18
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I've been thinking about this for a while and the question i've come to think is: how can one test safe eyewear? Let's say for example protection against like a tattoo removal laser setup
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Aug 29, 2022 10:20
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3D Megadoodoo posted:That's literally literally like saying "I thought it was the consensus that German cars are red". Yeah that makes sense but the way I remember it Ali glasses have been tested a lot and have been good about UV. Many opticians will test them for free, it’s worth checking out and would help make the bargain shopping less stressful
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Aug 29, 2022 10:28
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Snowy posted:Yeah that makes sense but the way I remember it Ali glasses have been tested a lot and have been good about UV. Many opticians will test them for free, it’s worth checking out and would help make the bargain shopping less stressful guess I gotta take my discount lenses to the laser lab at the university then
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Aug 29, 2022 10:30
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Polycarbonate as a material is pretty highly absorptive of ultraviolet light. You’d have to go out of your way to make sunglasses that didn’t block most of it. I wouldn’t trust Aliexpress sunglasses, but that’s because of their mechanical properties, not the optical ones.
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Aug 29, 2022 10:45
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so where am I buying that poo poo because gently caress me if i'm trusting my god drat eyes to amazon and that "I love you alive girl" rear end in a top hat
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Aug 29, 2022 10:47
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By popular demand posted:How stable is it? Maybe a bit light, but fine if you want to use it to hold your car keys or something similarly sized. It is hollow though, so you could drill a hole into it and put in some sand or lead shot to make it nice and bottom-heavy.
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Aug 29, 2022 11:01
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Snowy posted:Ali glasses Aliexpress isn't a shop or a brand or even a manufacturer. Every testimony about "Ali this" or "Ali that" is anecdotal. Maybe the 300€ box of baclava from Aliexpress won't kill you. Maybe it will.
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Aug 29, 2022 11:07
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The common argument in favour of cheap sunglasses is that the material that lenses are made from is cheaper to source and cheaper to make uv blocking than uv transmissible. I'd still want to test that but all the knockoff Roy bans and bokleys I've gotten have been polycarbonate.
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Aug 29, 2022 11:21
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My rules for buying on (generic) Ali is to only buy things that I can test the quality on and that are cheap enough that I can throw them away if they fail. So, if you have access to a way to test UV protection then Ali sunglasses are fine. Otherwise they aren't. Now generic Ali isn't actually worse then generic Amazon marketplace, with the main upside of Amazon being the better returns policy. Buying on a known brand store on Ali is just as fine as buying one of the Brand's products on Amzon or a local outlet.
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Aug 29, 2022 11:40
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StarkingBarfish posted:The common argument in favour of cheap sunglasses is that the material that lenses are made from[...] I note no-one is disputing that the utensils are made from lead and poison even though the listing advertises they're made from "wheat straw"
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Aug 29, 2022 11:43
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It’s a lot easier to test UV protection than lead content fwiw
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Aug 29, 2022 11:50
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Snowy posted:It’s a lot easier to test UV protection than lead content fwiw Just get a lead test kit from Aliexpress.
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Aug 29, 2022 11:51
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3D Megadoodoo posted:Just get a lead test kit from Aliexpress. Now that’s something I wouldn’t trust 
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Aug 29, 2022 11:57
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3D Megadoodoo posted:Just get a lead test kit from Aliexpress. "The lead is coming from inside the kit!"
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Aug 29, 2022 12:26
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I'm currently contemplating a fairly expensive AliExpress purchase..... An IP video/intercom. It's basically the same thing and the same brand I'd get if I got a local installer to do it except a fraction of the cost of buying even just the hardware locally (and I can pull my own cat6 cables out to the gate thankyou very much) Does anyone have any idea the chance I get counterfeit Hikvision gear sent to me? Here's the listing I have shortlisted that has decent customer photos/etc https://a.aliexpress.com/_mK0cgz6 And before anyone mentions the rules - I'm gonna use my own PoE gear for power and they can live on their own subnet.
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Aug 29, 2022 12:53
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LosMein posted:https://www.aliexpress.com/item/1005003778174434.html?spm=a2g0o.order_list.0.0.50b41802Xkz77f Thanks, I keep meaning to get a temp gun.
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Aug 29, 2022 12:57
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Based on a post in this thread, I went and got one of those falling sand chaos theory lamps. Very happy with it - here are some pictures:  
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Aug 29, 2022 13:33
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norp posted:Does anyone have any idea the chance I get counterfeit Hikvision gear sent to me? Cant imagine counterfeit hik stuff is any worse than the real poo poo. I'd never buy it for myself, mostly due to their software.
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Aug 29, 2022 13:58
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mobby_6kl posted:I've seen these chips from spiral-cut potatoes at various festivals and what not but never bought one because it usually costs a My Mom got this exact same one. She uses it with apples for apple pie. Never even thought about using it for potatos....
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Aug 29, 2022 14:15
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Needs a motor attached to it.
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Aug 29, 2022 14:20
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goatface posted:Needs a motor attached to it. same goes for that falling sand lamp, i want one that can flip itself on a programmable interval
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Aug 29, 2022 14:25
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mobby_6kl posted:I guess you could also just say it's everyone's favorite? Anyway, this pretty serious-looking one is like $12 here: https://www.aliexpress.com/item/327...id=ByCyTPCu4A8D  I'm the Activities Crank.
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Aug 29, 2022 14:34
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Snowy posted:I thought it had been established that Ali sunglasses had decent uv protection, am I misremembering? No, that's correct. Of course you can't be sure of every single kind there is but generally they are alright. Edit: Also the pricier replica ones can be of basically the same quality as the original, I've posted about the Ray Bans I got before and those are extremely solid. Polarized lenses, etc. Cached Money fucked around with this message at 14:41 on Aug 29, 2022 |
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Aug 29, 2022 14:36
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Strong Convections posted:
Haha yeah the utensils are probably fine. But if I buy it in a shop here it'll probably be the same thing. quote:You make the plushie sad Speaking of plushies, my friend got me this as a get well after my big surgery a couple years ago. I love durian, but she gave it to me only two months before Covid kicked off. So there were two months where people recognized it as durian rather than a virus. https://item.taobao.com/item.htm?spm=a230r.1.14.22.3fd36ebcthQA2g&id=677198477056&ns=1&abbucket=4#detail
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Aug 29, 2022 14:42
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You broke key rules of buying from AE - nothing safety related and nothing that goes into the body. The utensils are probably made of lead and poison. The sunglasses probably have bugger-all UV protection so the shade opens up your pupils for additional UV damage.
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norp posted:
Hikvision is on the US no-import list because of their ties to the Chinese military, so if you live in the US there's a good chance you won't ever get anything even Hikvision branded. https://www.securityinfowatch.com/video-surveillance/article/21243600/congress-passes-bill-banning-new-fcc-equipment-authorizations-for-hikvision-dahua-and-others
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Aug 29, 2022 14:46
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I'm in Australia and it seems to be pretty ubiquitous here
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Aug 29, 2022 16:07
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VictualSquid posted:Buying on a known brand store on Ali is just as fine as buying one of the Brand's products on Amzon or a local outlet. Would that be Genuine Brand, Genuine_Brand, Genuine Brand Store or Genuine Brand Mall?
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Aug 29, 2022 17:23
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Kerbtree posted:Would that be Genuine Brand, Genuine_Brand, Genuine Brand Store or Genuine Brand Mall? If you don't know then it isn't a known brand store, you know. More seriously, it is the one that they link on their normal website.
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Aug 29, 2022 17:27
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They're in love with the word "adsorption". Half of everything in my recommends seem to feature "adsorption" of some sort.
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Aug 29, 2022 17:31
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Cable Guy posted:Tag yourself... Definitely bottom sucker. goatface posted:Needs a motor attached to it.
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Aug 29, 2022 17:50
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Okay fine here's your drat sunglasses post If your sunglasses are plastic, there are essentially only two options for materials: acrylic or polycarbonate. Both of those will just naturally block UV somewhat, but here are your tests. My spectrometer can't go deep UV, but it can still show trends. Transmissive materials tend to have smooth, intuitive spectral characteristics, so if line looks like it's trending down, it probably is. Here are the contestants.  Here is daylight today. It's a little cloudy, but I've noticed/compared with sunny days, and that doesn't really change the relative intensity of UV much, just the overall intensity.  UV is on the left, and ideally we'd look a liiiittle bit further, but it's still representative. Here are the results.      In all cases but the last one, they very obviously work well. That last one is the rose graduated one on the left in the image, and that is mostly a case of it just not having much tint at all. It doesn't do much and I don't use it. All of them are essentially invisible to IR, on the right. Those spiky bits can be used as a reference to compare how much attenuation there actually is. For polycarbonate, you can see it becomes fully opaque right outside the range of what I can measured. 
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Aug 29, 2022 18:46
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ante posted:Okay fine here's your drat sunglasses post Very good post, lmaoing at something awful forums probably now being the place with the most safety data on anything on aliexpress
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Aug 29, 2022 19:21
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MSaDS Material Something Awful Data Sheets
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Aug 29, 2022 19:33
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Has anyone ordered one of those build a book nook puzzle things made from printed laser cut mdf? I get loads of ads, but the sites are variable and untrustworthy, do I hope Ali will have something more reliable. Example: https://www.aliexpress.com/item/1005004670207463.html Indolent Bastard fucked around with this message at 23:37 on Aug 29, 2022 |
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Aug 29, 2022 23:31
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ante posted:Okay fine here's your drat sunglasses post I love goons.
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Aug 29, 2022 23:58
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goatface posted:Needs a motor attached to it. buddy your chickweed avatar makes my teeth itch every time i see it.
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Aug 30, 2022 05:55
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ante posted:My spectrometer can't go deep UV, but it can still show trends. Transmissive materials tend to have smooth, intuitive spectral characteristics, so if line looks like it's trending down, it probably is. assuming you're not scanning any rare earths, anyway
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Aug 30, 2022 06:56
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Neodymium glass, cheap and dirty way to block light from low pressure sodium lamps of the sort commonly used for street lamps prior to the LED revolution. 
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Aug 30, 2022 07:04
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HELLOMYNAMEIS___ posted:Based on a post in this thread, I went and got one of those falling sand chaos theory lamps. Very happy with it - here are some pictures: That’s beautiful with the light and I’m kind of tempted but if I get a second falling sand thing do I become the falling sand thing guy? Like how people get into snowglobes and fill their houses with them. I don’t want to be a thing guy. How is the base on it? Sturdy? The non-lamp one came with a lovely plastic base that I either need to sand flat or replace with something sturdier.
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Aug 30, 2022 08:03
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