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yea i saw this, and i'm glad the creator didn't claim or try to fool everyone that it is perpetual, instead told us to go have fun with this 'kit'

if you're into custom made ones for more space, cheaper, well you should just go ahead and build one yourself. can't trust some half ass made printer that you have to figure out why it doesn't work...

get a makerbot, any problems, they'll fix

and this whole terrorist is being blown out of proportion, the people that have this much power to do this type of hacking are privaledged individuals working for the government or large...

NO!

AND

I'M PISSED at this idea for several reasons, like many other 'logical conclusions' our mind races to the end bypassing all the steps in between and we end up frozen in fear of what...

now to answer your question about how much parts cost, motors, treads, arduinos, look those parts are cheap, hundreds max, depends on how big, accuracy of the print, stability of the frame, etc etc,...

sry if this ended up being a sort of a history lesson, feel free to do your own research starting at: http://en.wikipedia.org/wiki/3D_printing

now an older technology only used plaster powder as its material, where a regular inkjet print head would deposit a liquid binding material to 'glue' the powder into a solid layer, as well as color....

there's also a process where, think of an object being printed with tape, you layer by layer tape on top of eachother until the object appears from all those layers

this process is called...

now for some materials, like photo polymers, or photo sensitive plastics, where the material hardens when exposed to uv light, a uv laser can point at a vat of curable photoploymer "resin" and...

next at the high end spectrum where quality is most important and when you want to use materials like metals, you need a way to achieve higher temperatures as well as control the deposition of...

so right now, 3d technology is sort of revolved around what materials can be printed,

for the materials that can be melted with relative low temperatures like thermoplastics, metal powders mixed...

alright so...you've basically asked 20 questions in 1 paragraph ;)

maker bots do most jobs pretty well, and what's available today, if u want the next level of quality, go laser sintering

this story is even more amazing: 40k arm down to 350, and and cheap replacements, upgrades, i say its more in the sensors, and the programming than the mechanical engineering
...

very inspiring, now that regular printers are consumer priced, yes teachers / parents / kids can print parts that help with daily life

it may feel uncomfortable, but hey, you just printed that and as a version 1, its pretty simple and does the job.

really just google 3d filament and you'll get many merchants, the quality us mostly the same, unless its proprietary materials like bronzefill or tglass, regular abs pla with color have mostly the...

now its 6-10iches per dimension, i'm sure they will reach a foot by next year

clear! :http://store.3dprintingsystems.com/T-Glass%201.75%20filament

thanks, although i'd expect the extruder to be a little more sophisticated, like regular ink jet printers, they can control the output volume of material...

abs is more 'crude' but more strength and higher melting temp. pla has a better 'resolution' but weaker, if you are into replacement parts, abs, but for more detailed hobby creations, definately pla

right now in the hay days of 3d printing, silver won't go anywhere, however, when we start getting some metal printing machines down to a consumer level pricing, silver might go up 5%, we need enough...

you don't Have to use abs, try the wooden fillaments, they have much higher temperature resistances before deformation

great article, inspiring other kids to get creative and create their dreams