"Security practises": you've got some folks, referred to as "security", practising. "Security practices": you've got a practice, and another practice, and together they make practices.
Makes a lot of sense, though my fingers still reach for the s key instead of c in both cases. Whoops.
If you can't send zeroes, you could encode data in the length of a laser pulse instead. Use error correction techniques to reduce the chance of errors. A checksum should have very low overhead but decrease your chances of errors immensely. If you're feeling silly, you could even use differently coloured lasers and hope they all hit near the same spot. Disco SMS:D
Re:If only it could do polycarbonates...
on
The 3D Un-Printer
·
· Score: 1
I know someone managed to print polycarbonates on a Reprap-style machine. Chewing them up shouldn't take too long either.. but CDs have more than just plastics in them, so I'm not sure if it'd work well.
Still, it'd be a good way to give -everyone- a decent stash of material to play with.
While you have a point, most plastic things I've looked at in the hopes of recycling them do not have sufficient information on them. Or, any information relevant to recycling at all. Am I just that blind?
You can find the density of PLA and ABS on wikipedia, so you can convert from a given weight of milk-jug plastic to a number of inches of 3mm thick filament. Most 3d printing enthusiasts don't even use volume or length of filament though, they just use weight.
I'm supposedly incapable of working for reasons that -would- make it difficult to keep a regular job, so I get some form of welfare. It doesn't stop me from doing things others might see as work. The desire to prove myself and do things that look neat drives me to better my own skills. So despite being a bad fit for a regular job, I do have some sort of creative output.
The biggest problem is that I'm an outlier, not the norm. But I think more creative minds would blossom if freed from the pressure to get a job.
15 Mbps = megabits per second. 1.6 MB/s = megabytes per second.
MB = megabyte, Mb = megabit. I know, it's a bit confusing. Internet connections are always by megabits, while download speeds are mostly by megabytes. 15/8 = 1.875 megabytes per seconds maximum speed. 1.6 is pretty decent in that case.
I can paint you a picture. Imagine a poor man. This poor man suddenly gets to take as many gold bars as he can carry. This poor man now has a burden which is still mighty convenient.
The funny thing is that I thought those mass shootings achieve nothing-... but apparently they do scare people into being less dickish towards the less socially-acceptable among us. Scaring people into doing the right thing never lasts long, and tends to bring more bad than good (fairly obvious in this case), but I didn't expect it to do anything at all. Apparently the people being dicks do realize they're being dicks. One would imagine they'd try to be pleasant people just for the sake of being.. you know... likeable.
If you want the experience.. I had great fun building a Mendel90, a Reprap type printer. I recommend it:) Makerbot used to be seen as a good source of printers too, until their EULA rewrite on Thingiverse painted the whole company "ugly" in the eyes of the open source community. There's a few other commercial Reprap knockoffs you could look into, best to just ask around on #reprap on freenode IRC
It needs a card slot to store the print instructions on, so you don't need a computer to be on, active and not-disrupting-the-usb for the duration of the whole print. Trust me, it can be immensely frustrating if your print is halfway done and suddenly your computer goes "welp don't need that usb anymore oh hey that's a usb let's recognize it again!" Then again, that computer was always a spaz.
These exist. There's even a contest to build a reliable, sub-$250 home filament extruder. Filabot used to have the lead, but http://www.3ders.org/articles/20121023-making-a-plastic-filament-extruder.html is also fairly interesting. But none of them seem to be close enough to finalized to actually use in daily life yet. I've heard someone say that it'd be easier/cheaper to just buy loads of plastic pellets rather than dealing with impure plastics from recycled materials. Pellets seem to be about 1/5th to 1/10th the price of good filament.
I have a printed owl figurine about 10 cm tall, with hexagonal 10% infill. It is really light, sturdy enough that it won't break without taking a hammer to it, and dimensional tolerances vary a bit with FDM machines anyway. Given that all axes use stepper motors, the tolerances are predictable enough between prints if you use the same settings.
The 0.1 mm mentioned on the article is nothing special, by the way. With Slic3r you can go down to 0.01 and someone has done that... but a hollow model took a full day to print. I print at 0.1 or 0.15 all the time, depending on the accuracy I need. You can even choose to only infill once every x layers, so you can do it with a thicker line and spend less time printing that pattern over and over.
Any printer that uses G-code can use Slic3r to slice up meshes for it. Slic3r has a number of different infill patterns, and I'll admit the honeycomb one is the neatest by far. It does slow the print down a bit compared to rectilinear though, but it's good if you want quality rather than speed.
People have built Repraps that can do the same thing for $300. The lowest one was $250 or so, I think. Of course, they require self-sourcing and a bit of skill with various tools like soldering irons, screwdrivers and the Arduino IDE. Not ideal for the general consumer.
ABS has not been tried for lost-wax methods, afaik, but PLA (another material often used interchangably, lower melting point and more eco-friendly) has been used to cast aluminum. http://3dtopo.com/lostPLA/
Could at least exempt all students who don't need a visa. That would cut down on harassment. Other than that, I'd agree... just require actual results at the end of the year, and perhaps at the ends of semesters or whatever they're called. If you score 40% or less for more than one thing, or don't bother showing up at all, you get kicked out.
I'd say it's Bridge Builder (or Pontifex) meets World of Goo. Except your tools are more straightforward than in WoG and more fun than in the Bridge Builder games.
Slashdot Mirror
"Security practises": you've got some folks, referred to as "security", practising.
"Security practices": you've got a practice, and another practice, and together they make practices.
Makes a lot of sense, though my fingers still reach for the s key instead of c in both cases. Whoops.
Duration of the pulse or nonpulse. That's how you get 0-4095
If you can't send zeroes, you could encode data in the length of a laser pulse instead. Use error correction techniques to reduce the chance of errors. A checksum should have very low overhead but decrease your chances of errors immensely. If you're feeling silly, you could even use differently coloured lasers and hope they all hit near the same spot. Disco SMS :D
So you want to shoot laser penguins at the moon?
I like the way you think, but PETA might not.
I know someone managed to print polycarbonates on a Reprap-style machine. Chewing them up shouldn't take too long either.. but CDs have more than just plastics in them, so I'm not sure if it'd work well.
Still, it'd be a good way to give -everyone- a decent stash of material to play with.
While you have a point, most plastic things I've looked at in the hopes of recycling them do not have sufficient information on them. Or, any information relevant to recycling at all. Am I just that blind?
You can find the density of PLA and ABS on wikipedia, so you can convert from a given weight of milk-jug plastic to a number of inches of 3mm thick filament. Most 3d printing enthusiasts don't even use volume or length of filament though, they just use weight.
I'm supposedly incapable of working for reasons that -would- make it difficult to keep a regular job, so I get some form of welfare. It doesn't stop me from doing things others might see as work. The desire to prove myself and do things that look neat drives me to better my own skills. So despite being a bad fit for a regular job, I do have some sort of creative output.
The biggest problem is that I'm an outlier, not the norm. But I think more creative minds would blossom if freed from the pressure to get a job.
Pirates are heroes.
Wasn't it like $9001 quadrillion they lose every month to piracy? Fight the pirates, get a death star!
Stupidly simple
All of them, obviously. Kind of like some countries where you can't go a day without doing something illegal you didn't know about.
15 Mbps = megabits per second.
1.6 MB/s = megabytes per second.
MB = megabyte, Mb = megabit. I know, it's a bit confusing. Internet connections are always by megabits, while download speeds are mostly by megabytes. 15/8 = 1.875 megabytes per seconds maximum speed. 1.6 is pretty decent in that case.
I can paint you a picture. Imagine a poor man. This poor man suddenly gets to take as many gold bars as he can carry. This poor man now has a burden which is still mighty convenient.
I'd say the biggest advantage is that this one listens to your commands. Normal mules are well-known for doing anything -but- listen.
DontYou_hateThose_nProgrammersWho_just_use_whats_con_feckin_venient?
The funny thing is that I thought those mass shootings achieve nothing-... but apparently they do scare people into being less dickish towards the less socially-acceptable among us. Scaring people into doing the right thing never lasts long, and tends to bring more bad than good (fairly obvious in this case), but I didn't expect it to do anything at all. Apparently the people being dicks do realize they're being dicks. One would imagine they'd try to be pleasant people just for the sake of being.. you know... likeable.
What's ironic is that most of the electronics sets use a simulated com port for communication.
If you want the experience.. I had great fun building a Mendel90, a Reprap type printer. I recommend it :) Makerbot used to be seen as a good source of printers too, until their EULA rewrite on Thingiverse painted the whole company "ugly" in the eyes of the open source community. There's a few other commercial Reprap knockoffs you could look into, best to just ask around on #reprap on freenode IRC
It needs a card slot to store the print instructions on, so you don't need a computer to be on, active and not-disrupting-the-usb for the duration of the whole print. Trust me, it can be immensely frustrating if your print is halfway done and suddenly your computer goes "welp don't need that usb anymore oh hey that's a usb let's recognize it again!"
Then again, that computer was always a spaz.
These exist. There's even a contest to build a reliable, sub-$250 home filament extruder. Filabot used to have the lead, but http://www.3ders.org/articles/20121023-making-a-plastic-filament-extruder.html is also fairly interesting. But none of them seem to be close enough to finalized to actually use in daily life yet. I've heard someone say that it'd be easier/cheaper to just buy loads of plastic pellets rather than dealing with impure plastics from recycled materials. Pellets seem to be about 1/5th to 1/10th the price of good filament.
I have a printed owl figurine about 10 cm tall, with hexagonal 10% infill. It is really light, sturdy enough that it won't break without taking a hammer to it, and dimensional tolerances vary a bit with FDM machines anyway. Given that all axes use stepper motors, the tolerances are predictable enough between prints if you use the same settings.
The 0.1 mm mentioned on the article is nothing special, by the way. With Slic3r you can go down to 0.01 and someone has done that... but a hollow model took a full day to print. I print at 0.1 or 0.15 all the time, depending on the accuracy I need. You can even choose to only infill once every x layers, so you can do it with a thicker line and spend less time printing that pattern over and over.
Any printer that uses G-code can use Slic3r to slice up meshes for it. Slic3r has a number of different infill patterns, and I'll admit the honeycomb one is the neatest by far. It does slow the print down a bit compared to rectilinear though, but it's good if you want quality rather than speed.
People have built Repraps that can do the same thing for $300. The lowest one was $250 or so, I think. Of course, they require self-sourcing and a bit of skill with various tools like soldering irons, screwdrivers and the Arduino IDE. Not ideal for the general consumer.
ABS has not been tried for lost-wax methods, afaik, but PLA (another material often used interchangably, lower melting point and more eco-friendly) has been used to cast aluminum. http://3dtopo.com/lostPLA/
Could at least exempt all students who don't need a visa. That would cut down on harassment. Other than that, I'd agree... just require actual results at the end of the year, and perhaps at the ends of semesters or whatever they're called. If you score 40% or less for more than one thing, or don't bother showing up at all, you get kicked out.
I'd say it's Bridge Builder (or Pontifex) meets World of Goo. Except your tools are more straightforward than in WoG and more fun than in the Bridge Builder games.