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Cubify 3D Printers Aren't Just for Squares (Video)

There are other 3D printers out there, but Cubify claims theirs is easier to use, has easier cartridge changes, and is all-around nicer and cooler than their competition. And Timothy Lord found them at Google I/O 2012, which means Google thinks they're cool, too. Wow. At only $1300 for their basic model (plus $50 each for the plastic "print" cartridges), every home should have one of these. Or maybe two or three. Or maybe Hackerspaces will buy all of them, and that's where we'll go to satisfy our lust for 3D printing.

45 of 134 comments (clear)

  1. not slashvertisement enough... by Anonymous Coward · · Score: 3, Insightful

    article needs a blue screen w/ 1800 number and steak knives.

    btw, who cares if google thinks it's "cool."

    where am i supposed to go to satisfy my lust for sanding? photocopying? or any of the other basic tools?!

    finally, a thermally-controlled 3d-printer without an enclosure to control ambient temperature is begging for trouble.

  2. Re:But can it print a Tux? by durrr · · Score: 2

    $50 for the cartridge sounds a bit expensive.
    You can probably find something equvalent for less than half the price from http://reprap.org/wiki/Printing_Material_Suppliers

  3. Just what hackerspaces need.. by Anonymous Coward · · Score: 5, Insightful

    Something closed-source, with proprietary consumables, and based on how it looks likely difficult to repair.

    No thanks, I'll stick with a Makerbot or RepRap 3D printer.

    1. Re:Just what hackerspaces need.. by jythie · · Score: 2

      Well, that is why market variety is a good thing. 'hackerspace' is a pretty broad group, with one hacker's tools being another hacker's toys. These more propriety devices will generally be better for people who want a device who's purpose is to produce parts for their actual interest as opposed to something that is a goal unto itself.

      Personally I have been considering things like the Makerbox, RepRap, Rapman, etc... but so far they are too in the 'toys unto themselves' category whereas what I want is an out of the box device for producing components. I do not think this device will be what I want either, but I imagine that in a few years we will see a few converances.

    2. Re:Just what hackerspaces need.. by Smidge204 · · Score: 2

      If you want a true out-of-the-box solution for 3D printing you can have it - at a premium price. ZCorp immediately jumps to mind but they are by no means the only source. A Reprap device will cost you a tenth or less of the commercial-ready machines, but the tradeoff is you will need to put in the time to assemble it and tinker to get top performance.

      =Smidge=

    3. Re:Just what hackerspaces need.. by psergiu · · Score: 4, Insightful

      Also, according to their site, the software needed to convert the "3d object" files in a format that this printer will understand is Windows-only.

      --
      1% APY, No fees, Online Bank https://captl1.co/2uIErYq Don't let your $$$ sit in a no-interest acct.
  4. Who is this for? by Anonymous Coward · · Score: 2, Insightful

    Hmmm lets look at this:
    The market for something this expensive would be people so deep into the hobby, that they would be able to get something cheaper, expandable and accepts a universal standard for input instead of something expensive and proprietary. Even in a hacker space you have to have the knowledge to get the model and then use the software to print it, you have to dive pretty deep in order to get involved.

    1. Re:Who is this for? by faedle · · Score: 2

      Not necessarily. $1200 puts it into the reach of the kinds of people who bought the first generation Cricut. Plus, the cartridge-based consumables and the software makes it pretty user-friendly. My guess is that you can go from open-the-box to printing something off Thingiverse in a matter of minutes.

      This is the Apple ][ of the 3D printing world: the first completely assembled ready-to-go take-it-out-of-the-box-and-start-printing consumer 3D printer. Yes, it's likely going to have a fair share of early adopters and hobbyists, but this is a likely candidate for something that takes 3D printing into a lot of homes and workshops that six months ago wouldn't have imagined owning a 3D printer.

      Yes, I can imagine one soccer mom type I know getting one of these. It will sit right next to the Cricut and the $1200 embroidery machine.

    2. Re:Who is this for? by wjsteele · · Score: 3, Informative

      It's most certaintly not the first. There are several 3D printer manufacturers (including MakerBot themselves) out there that have been doing this for quite a while now... but none of them are charging as much for their consumables. It seems that for $50, you get about a pound of material, which is roughly 3 times the normal cost.

      Bill

      --
      It's my Sig and you can't have it. Mine! All Mine!
    3. Re:Who is this for? by jasenj1 · · Score: 3, Informative

      We have a Cricut and a Silhouette - electronic paper cutters.
      The home crafting market is one I think a 3D printer would do well in, and this one seems to be aiming in that direction. There are lots of moms & grandmas who sew, quilt, knit, make cards, scrapbook, etc. Many of those women are incorporating computer driven tools into their workflows. A 3D printer would let them print cutsie embellishments, cupcake holders, party favors, napkin rings, and "girlie" things that are completely off the radar of the "hacker space" boys club.

      - Jasen.

  5. Precious metal plastic cost by vlm · · Score: 5, Insightful

    (plus $50 each for the plastic "print" cartridges)

    Filament extruder plastic costs about $35 per kilo (talk about mixed measurements... but that's how its sold. Figure "fifteen bucks per pound")

    So a loaded $50 cartridge should weigh at least 4 pounds total. I can't figure out on the website how much a cartridge weighs, but just looking at it it seems like you're paying a pretty high premium for your plastic.

    Not quite as bad as "precious metal cost" printer ink, but I bet by the time HP sells a 3-d printer they'll find a way to make the plastic cost more than, say, silver, on a weight basis.

    --
    "Science flies us to the moon. Religion flies us into buildings." - Victor Stenger
    1. Re:Precious metal plastic cost by TheCarp · · Score: 2

      Yup. I just setup a 3d printer from a kit, but the one I put together can be had, already set up, for $1200, which is $100 cheaper than they want.... plus, uses simple filiment rolles, and I am printing beautifully with those cheap $35/kg PLA rolls.

      Can't blame them, I guess, for trying to get people to agree to a lock in for convinenece.... especially since there is no real need for anyone with a normal 3d printer to ever pay the premium to support their vendor.

      That said, I will take a bit more manual work for the cheaper filiment.

      --
      "I opened my eyes, and everything went dark again"
    2. Re:Precious metal plastic cost by vlm · · Score: 2

      figure a few bucks each, screwups included. More than I'd pay.

      How much to people pay for pathfinder/DnD/Mech minis? Or small kids toys, or custom/exotic chess set pieces, etc?

      I was semi seriously thinking of teaming up with a 3d graphics artsy type to make a service where you send us a couple (preferably clothed) pics and we send you a pathfinder mini who looks like you but with somewhat elvish features wearing wizard clothing... I figured I could sell personalized minis for about the same as mass produced generic minis but surface features "don't work" at this time at that price level. Maybe another factor of 10 on resolution per dollar and I can go for it. The problem is I can buy the res I need off the shelf but the minis would have to cost $300 each, or I can buy the price I need but the res would be poor enough not to bother. Then again the latest pathfinder release of a ultra fancied up adventure path re-release is like $200, so maybe there's a market after all.

      Oh even paying 2 to 10 times normal retail for the plastic, there are still uses. I just don't want to overpay by 2 to 10 times.

      --
      "Science flies us to the moon. Religion flies us into buildings." - Victor Stenger
    3. Re:Precious metal plastic cost by vlm · · Score: 2

      I helped a friend build his Makerbot kit

      To the best of my knowledge they only sell the replicator model now.... the "good" news is they sell it fully assembled and tested just remove from box and plug in, the "bad" news is instead of a mere $1200 or whatever its more like $2K with dual extruders.

      Rapman product is the specified "about $1200", maybe thats what the original poster purchased.

      The printrbot is much cheaper around $500 but seemingly perpetually out of stock.

      build without already owning an entire machine shop.

      I own a full machine shop, and unfortunately there are no 3-d printer blueprints. plenty of STL files and assembly diagrams to be printed but a dude with a milling machine and a lathe has to figure out how to make the parts on his own and some of them are rather mysterious from a traditional machining standpoint. I should probably sharpen up my cad skills and create and release a set of traditional machinist prints for a near-reprap printer, like a huxley or a mendel. It would seem a heck of a lot simpler to retrofit my CNC mill to extrude, or simply find a buddy to print me a set of parts.

      --
      "Science flies us to the moon. Religion flies us into buildings." - Victor Stenger
    4. Re:Precious metal plastic cost by TheCarp · · Score: 2

      I put together the MakrerGear kit: http://www.makergear.com/products/3d-printers

      It is a bit expensive but a number of parts are upgraded from the cheap options that people say you can source for half the total cost. Brass bushings instead of PLA, linear rod instead of tool rod, Really nice compact extruder with a metal gear box on the stepper, pre-cut jig for checking the frame geometery.... and of course shielded wire for motor hookups.

      Its a great kit if you are willing to pay a bit more for the convinence of having it all put together, and the upgrades there (including a tube that can be used for either a bowden extruder or a filiment guide).

      A few bits could have been documented better, would have saved me some time. I highly recomend getting some 1/4" or so thick window glass (8"x8") and some binder clips to mount (plenty of pics online) then cover that with Kapton.

      The mistake that cost me the most time was not using seperate nuts for tensioning the bed springs and adjusting the bed level. Once I found a video online that showed it done properly, it was an easy fix. first upgrade I recomend is M4 thumbwheels for the bed leveling nuts.

      I also just uploaded my own design for a jig to mount a dial gauge indicator on the rods to check the bed level.... I recomend a dial guage and this jig: http://www.thingiverse.com/thing:26031

      --
      "I opened my eyes, and everything went dark again"
  6. 50$ for a cartridge? by Hentes · · Score: 2

    I guess they also copied the business model of 2D printers.

    1. Re:50$ for a cartridge? by fuzzyfuzzyfungus · · Score: 4, Funny

      Oh, you can refill the cartridge; but does your filament have the correct cryptographically-signed-and-timestamped anti-tamper code printed along its entire length?

      If the optical-verification scanner in the filament feed path encounters a missing section, or a section not signed with the private key corresponding to the public key QR-coded on the filament cartridge, it won't continue printing, now will it?

      And don't even think about a replay atttack... Each cartridge's key is reported to the Consumable License Activation Server upon first installation, and each Enciphered Consumable Subsection String is reported as consumed when it first passes through the optical-verification path. If a printer attempts to validate a previously validated cartridge key, or reports the consumption of filament with the same Enciphered Consumable Subsection String more than once, your printer will fail Cubify Genuine Advantage...

      (The above is sarcasm; but I suspect that it wouldn't exactly be rocket-surgery to implement such a system in the real world...)

  7. How about openness? by unixhero · · Score: 3, Insightful

    What happened to sharing?
    I thought the most important part about the 3D printer revolution was that users were in fact able to get designs through a communal repository of designs, FOR FREE.

    What I see here is a bunch of super-fancy iPhone covers that sell at USD30.
    That is not going to help fuel the revolution that the other 3D printers started. The implications for the world are enormous when everyone can replicate items in their house for free. It is not impressive when you get an iPrinter- that increases the cost of using it significantly.

    Screw simplicity. I want to be free.

  8. Bloody printer cartridges... by fuzzyfuzzyfungus · · Score: 4, Insightful

    The thing that makes me nervous about this 'Cubify' business, though the hardware certainly has a more polished look than some of the DIY models, is that it appears to derive its attitude toward software and consumables from the same cesspool that consumer inkjets use...

    By the pictures, the 'cartridge' is a smallish reel of polymer filament('proprietary ABS' per the FAQ). ABS filament should set you back less than $20/lb, not $50/cartridge-of-unspecified-capacity-and-properties...

    And software? Ha, ha, ha. Even if you already have an STL object ready to roll, it's their fisher-price-meets-flash-game mutant bastard child of kiddo's first 3d modelling application/device-driver for you. But at least you get 25 free 'creations' if you buy one! Have they been poaching software guys from HP's consumer printers division or something?

    It's honestly somewhat baffling. Given economies of scale, mass production, experience, potentially useful patents, etc. it shouldn't be terribly difficult for commercial 3d-printer vendors to compete on hardware specs(along with fit-and-finish and easy availability of finished products rather than kits) with the various DIY contraptions, but these 'Cubify' fellows seem determined to undermine what might be promising hardware with usurious consumables pricing and cringe-worthy software...

    1. Re:Bloody printer cartridges... by faedle · · Score: 2

      I think you may be looking the wrong direction as to "who they're copying."

      They are looking directly at the Cricut. Call it a hunch, very soon there will be an online store where you can buy objects for printing: and those will be where the profit is made.

    2. Re:Bloody printer cartridges... by jythie · · Score: 2

      *shrug* geeks might lament the closed rip-off that is the inkjet printer market, but it did work quite well, resulting in low cost high quality printing in pretty much every livingroom. I still remember when 'high quality' printing was the exclusive domain of massive laser printer systems and plotters. You know what.. if one wants more open options they still exist. You have to pay more for them, but they have been driven down in cost over the decades.... in other words the open alternatives might not have gotten as much of a boost as the closed one but they still benefited from the market.

      This 'all market segments should meet my requirements' thing is starting to drive me crazy. Sure, these devices are not ideologically pure, but your devices will still exist and mere morals interested in just printing things will have access to equipement that meets THEIR needs.

    3. Re:Bloody printer cartridges... by joss · · Score: 2

      You need http://geomagic.com/en/ - good software, also happens to be run by one of the most fascinating people on the planet.

      --
      http://rareformnewmedia.com/
    4. Re:Bloody printer cartridges... by fuzzyfuzzyfungus · · Score: 5, Insightful

      Maybe the people that I know are unrepresentative(and I'm not just talking about my nerd friends, I include the family members and various other non-techies who end up informing me of their usage habits in the course of extracting tech support); but inkjets seem to have suffered pretty massively in popularity in the last 5-ish years.

      Photo printing seems to be nearly dead, with people either sending them to facebook and never printing them at all, or uploading them to some print service, which small-scale home inkjets can't touch on price or performance, and $100 laser printers have been a real kick in the teeth for inkjets when it comes to printing text/homework/online bank statements for paper filing/etc/etc.

      Back when laser printers were quite expensive, and 'online' was not a ubiquitous concept, inkjets were certainly all over the place; but the 'razor/blades' model that the vendors all chased seems to have earned them substantial enmity. Even complete technophobes have frequently have a sense of grievance about how much ink cartridges cost, and how often printers break.

      In the case of 3d printing, I definitely don't think that the future is a reprap in every household: DIY/Kit/OSS/etc 3d printers are geek toys, no question. However, the non-geek(and, in many cases, also useful to geeks) solution appears to be one of the 'upload 3d model, receive physical model by fedex' services that will sell you time on 20k+ printing gear a few bucks at a time, in the same way that the online photo printers do for 2d prints.

      That is why I have such doubts about an offering like this. It isn't a terribly good fit for the nerds and hackers demographic that is likely to actually want a 3D printer on site; but it is also too expensive(up front and in consumables) to compare favorably for nontechnical users with the online print-to-order outfits that are similarly simple and friendly but have much more sophisticated equipment, and it's attempt to hit a consumer price point makes it a bit too limited(in materials, model size, and toolchain) for the rapid-prototyping needs of business users.

  9. Won't happen by Dunbal · · Score: 2

    They're using the ink-jet business model by overcharging for the "cartridges". Except they are charging an arm and a leg for the printer too. So for $1300 you can buy the printer and a cartridge, and additional cartridges are $50 each. For that $50, you can print (according to their website) between 10 and 14 creations. That means each creation costs between $3.50 and $5.00 each without starting to think about paying for the machine itself and other costs (software, design, licenses, electricity, etc). Funny to think it's still cheaper to make something in China and have it shipped to the other side of the planet.

    When they are serious about this being more than just a toy, they'll drop the price on the cartridges to what it's really worth - like maybe $5.

    --
    Seven puppies were harmed during the making of this post.
  10. Shapeways by i+kan+reed · · Score: 5, Insightful

    I know this will sound like shilling, but all I can give is my personal assurances that I have no connection to the site.

    Shapeways.com is cool. I realized long ago that I won't personally 3d print very many items, and there are still economies of scale to 3d printing, even if a lot less than manufacturing. So shapeways has multiple varieties of 3d printer, and numerous materials of varying pricing, and open source models other users have printed you can use or modify and use. As a user, you only see the software(blender) and the finished product when it's shipped to you. Actually OWNING a 3d printer doesn't appeal to me much, but there are a couple things I'm working on to (eventually, some day) print.

    1. Re:Shapeways by QuasiSteve · · Score: 4, Informative

      Not sure why you're modded off-topic - considering that Shapeways or, and I guess I'll plug their 'competitor' here, i.materialise, are a great option for those who want high quality (much higher than what you get out of Makerbot etc.) for a low price (compared to buying a 3D printer (kit+assembly)) with practically zero hassle.

      I guess this Cube thing is somewhere between the Makerbots and the z-corp et al high end devices, but still more on the Makerbot end.

      There are also desktop 3D printers that cost a bit more but may be worth the bother if you need what they do. One site that comes to mind is http://desktopfactory.com/

      It occurs to me, reading the page there, that 3D Systems may be on their way to trying to corner the consumer/prosumer market.

  11. Re:Casting Material very limited by h4rr4r · · Score: 4, Insightful

    SoI take it you have never heard of lost wax casting I take it?

    You print the item you want, you pack that in a material with a higher melting point than the desired material for the object, melt the end material and pour it in.

  12. Re:But can it print a Tux? by skids · · Score: 4, Insightful

    What I want to know is when will these things have a hopper where I can chuck all my old laundry detergent bottles as feedstock?

  13. Re:Casting Material very limited by h4rr4r · · Score: 3, Informative

    Clearly I need more caffeine.

    I meant to say:

    I take it you have never heard of lost wax casting?

    You print the item you want, you pack that in a material with a higher melting point than the desired material for the object, melt the end material and pour it in.

    This is how a lot of metal casting is/was done using wax as the model and sand as the form.

  14. Hackerspace vrs Lowes Home Depot by ZombieBraintrust · · Score: 5, Interesting

    I don't see people going to a hackerspace to print something out. This tech will take off when it gets adopted by home improvement stores. Then you can get your printed plastic at the same place you get your cut glass and timber.

    1. Re:Hackerspace vrs Lowes Home Depot by WillAdams · · Score: 2

      That's a very good point --- I've been surprised that 3D scanners, printers and CNC machines haven't showed up at hardware stores --- show up w/ a broken part --- the scanner scans it and if in stock, directs you to the correct aisle --- if not, it calculates a cost to either 3D print (if plastic) or mill (if wood or metal).

      William

      --
      Sphinx of black quartz, judge my vow.
  15. Re:Casting Material very limited by Anonymous Coward · · Score: 4, Funny

    Or you could have the local smithy cast it for a shilling.

  16. Re:Casting Material very limited by h4rr4r · · Score: 2

    No, you keep that in the garage.
    WIth just a propane tank and some hardware store supplies you can easily be casting low melting point metals. Even just reuse "free" metal like aluminum cans or wheel weights.

  17. Re:But can it print a Tux? by Space+cowboy · · Score: 4, Interesting

    It's a popular idea, but the materials science guys tell us that re-melted plastic has different properties than "fresh" plstic, and the more times you melt it, the worse it gets (more brittle, different melting temp. etc)

    If you want accurate prints, you're going to need fresh plstic. Sad but true.

    Simon

    --
    Physicists get Hadrons!
  18. Transcript by QuasiSteve · · Score: 2

    Title: Cubify 3D Printers Aren't Just for Squares
    Description: There are other 3D printers out there, but Cubify claims theirs is easier to use, has easier cartridge changes, and is all-around nicer and cooler than their competition.

    00:00 TITLE
    A shot of a 3D printer printing an object is shown, with the SlashdotTV logo bar reading "The Cubify 3-D Printer at Google I/O 2012"

    00:03 TITLE
    Timothy Lord is shown standing in a hallway

    00:03 Timothy
    Here's another intriguing product on display at Google I/O, mostly because it can be controlled from an Android tablet, although it can also be fed data from a wireless network or from a USB stick plugged into the side.

    00:12 TITLE
    Another shot of the 3D printer printing an object is shows.

    00:18 TITLE
    Back to the shot of Timothy

    00:18 Timothy
    It's a 3D printer that tries to emulate the easy-of-use of a laser printer, rather than a typical 3D printer where you have to feed it rolls of continuous stock.

    00:27 TITLE
    The view changes to Adam of cubify.com in front of their booth at Google I/O.
    At the booth there are 3 Cube printers set up that are shown behind Adam.

    00:27 Adam
    Hey, this is Adam with cubify.com , part of 3D Systems, and we're here with the Cube, just having an opportunity to take a quick little demo.
    Just finished printing up a little Android right now, so if you wanna take a look a little bit closer...

    00:42 TITLE
    The view zooms in on the Cube printer

    00:43 Adam
    There are a couple of things here that are actually unique to this particular 3D printer.
    Where there are several other printers that exist out there, at a similar price point, that are a little bit more open - instead what we opted to do was, rather than having to worry about "how hot does the extruder need to be?", "is my plastic gonna be too hot or too cold?", "If it's too cold is it gonna jam the head, possibly unhinge something?", "if my bed is too hot or too cold causing any kind of warping", "do I have to worry about in-fill pattern?", Support material designs?" - our 26 years of engineering experience have automated that for us.
    So this way all I need to do is to be able to hit 'build', and I'm able to get my parts.
    For our support materials, what we actually did was created some perforated supports, so this way [...]

    01:24 TITLE
    Adam reaches over to the printed Android robot and pokes at some support structures

    01:24 Adam
    [...] they snap right off - no big deal at all, doesn't take any heavy lifting, doesn't damage the part.

    01:32 Adam
    Now, from what I heard, you guys were interested in changing out some cartridges.
    Before we go ahead and do that..
    You can take any STL format, pop it into our software, hit 'import', hit 'build' - from there you're ready to go.
    Everything is automated for you as far as support structures, everything is ready as far as build times and fill patterns.
    You can either do it via USB, or via WiFi, no problem at all.

    01:56 Adam
    We're gonna do a really quick demo right now as far as how to input and change out a cartridge, so come on over.

    02:00 TITLE
    Adam inputs a few commands on the control panel.

    02:03 Adam
    We have two screens between 'print' and 'setup'.
    We're just gonna go to 'setup', and our first option is to 'load cartridge'.
    So as we hit that, what's going on now is we're heating up the extruder, and we're actually gonna reverse out the plastic material right here.
    And in a matter of seconds what's gonna happen next minute, minute and a half, is the material is actually gonna eject.
    We're gonna pull it out, we're gonna pop in another cartridge, and from there we're just gonna feed it right back in.
    Really simple.
    Now it says right here to replace the cartridge and press the button.
    Hit that.
    Now I'm just gonna insert the filament right in here, like so, and right now you can see it pulling in.
    Now another 5, 10 seconds you're gonna see a little bit of excess material

  19. Re:But can it print a Tux? by roman_mir · · Score: 4, Informative

    Unfortunately all plastics are different.

    No plastic is the same, plastics have different composition, additives, melting points, all sorts of different properties that really makes it impossible to melt them together and expect any sort of consistency.

    OTOH it instead of melting the plastics, your old bottles could be shredded somehow into powder and then mixed with something sticky, some glue or epoxy, but even then different behaviours of different plastics would be problematic.

  20. Re:But can it print a Tux? by SomePgmr · · Score: 2

    Fair, but I can see the utility in a finished device like this where everything is pretty simple. My first thought was of the tech labs we had as kids in middle school.

    Also, can we please get a /. operating rule for video ads that says you can't immediately start with a annoying alarm clock going off? That little eye-opener damn near gave me a heart attack.

  21. Re:Casting Material very limited by ArsonSmith · · Score: 2

    http://smooth-on.com/

    In case you'd like to learn how to do it.

    --
    Paying taxes to buy civilization is like paying a hooker to buy love.
  22. Re:But can it print a Tux? by tmosley · · Score: 3, Interesting

    Seems to me that that is a function of the additives in the plastic. If you use all milk containers, the properties shouldn't change.

    Also, I never heard of the properties of plastic changing just from melting and re-extruding them. Maybe it is just a scale issue, where small scale reprocessing creates an inferior filament.

  23. Re:But can it print a Tux? by skids · · Score: 2

    Laundry detergent bottles are emminently remeltable. Just don't breath the fumes, and expect the volume to shrink a bit. But the end product is relatively durable. That plastic is a bit less rigid than would be needed for some uses, though.

  24. Re:But can it print a Tux? by ortholattice · · Score: 3, Interesting

    Actually, I was wondering the opposite, which is how to recycle objects that you make. I would guess that typically there will be significant waste as prototypes are fine-tuned, as well as when whatever you make breaks or is no longer needed.

    I hope the design software will make it easy to incorporate the plastic's recycle number in a triangle embossed somewhere on the object, and even encourage it. My town's recycle service requires that all plastic objects have this number on them. In the past they have refused to pick up non-container plastic objects that don't have this number (when they notice it), such as a toy that stands out from the rest.

  25. Re:Casting Material very limited by Smidge204 · · Score: 2

    You're better off turning in the aluminum cans for the deposit and buying fresh aluminum with the money. There is FAR LESS than 5 cents of aluminum in a soda can.

    =Smidge=

  26. Re:But can it print a Tux? by Anonymous Coward · · Score: 2, Informative

    It's a function of the plastic itself. Most plastics will depolymerize* at a much lower temperature than that at which they would theoretically melt (if they could reach it without depolymerization). When you melt and re-solidify it, it often isn't even a plastic anymore.

    3D printers use thermoplastics, which are the exception in that they become soft and workable at a temperature that's below depolymerization.

    *Alternatively, turn into a different plastic composed of the same building blocks. Proteins** are an excelent example: go more than a little above body temperature and most will denature.

    **Yes, they're polymers.

  27. Re:But can it print a Tux? by Aviation+Pete · · Score: 2

    Also, I never heard of the properties of plastic changing just from melting and re-extruding them. Maybe it is just a scale issue, where small scale reprocessing creates an inferior filament.

    Then you are not listening to the right people, those who know their stuff. Plastics are long chain molecules, and extrusion involves high shear forces at high temperatures, cracking those chains.

    Next, these molecules need stabilizers to protect them from UV light and oxygen radicals. Those are also damaged in the melting and re-extrusion process. Either you add more of them, or permanently degrade the material.

    The list goes on ...

    --
    You know it's time for the next revolution when your rulers' names end with roman numerals.
  28. Re:But can it print a Tux? by nighthawk243 · · Score: 3, Insightful

    Most people are used to paying out the ass for inkjet/toner cartridges. Anyways, the RepRap is much cheaper and flexible, but it isn't something the mainstream users that Cubify is targeting will be able to build/use. Your average Slashdotter that likes to tinker with 3D printing will take the time to become proficient with the small details of getting everything to work; but the run of the mill engineer, doctor or whatever trying to prototype something via CAD just wants it to work without much effort. Plus it appears to be more polished, which helps in regard to workplace safety. An exposed extruder isn't something you really want. While I love the RepRap project, 3D printing won't become mainstream if it remains a gearhead type of operation.