Slashdot Mirror


3-D Printing Pen Can Draw In the Air

Several readers sent word of a new addition to the 3-D printing industry. Most 3-D printers are roughly the size of regular printers, and require design files on the computer to guide the extruder. Now there's a much smaller and much simpler alternative: the 3Doodler pen, which lets you draw 3-D objects by hand. The people making the pen set up a Kickstarter project yesterday with a $30,000 goal. They reached that within hours, and now have pledges exceeding $800,000. "The 3Doodler pen is 180mm by 24mm. The pen weighs less than 200 grams or 7 ounces (the weight of a typical apple), although the exact weight will depend on the final shell specifications once in production. And we are using a universal power supply, so provided you have the correct adapter for your country, 3Doodler will work just fine on 110v or 240v. ... While the plastic extruded from 3Doodler is safe to touch once it has left the pen, the pen itself has a metal tip that can get as hot as 270C." The pen uses the same ABS/PLA plastic as most 3-D printers, and they're planning to host stencil designs on their website so that users have patterns to sketch from.

26 of 85 comments (clear)

  1. Really? by Garridan · · Score: 5, Insightful

    All that for a hot glue gun?

    1. Re:Really? by somersault · · Score: 3, Insightful

      Well they're selling them for $50, that's not bad. And a hot glue gun doesn't have the same level of finesse/control, from what I can see online..

      --
      which is totally what she said
    2. Re:Really? by Sarten-X · · Score: 3, Interesting

      You can do some neat stuff with hot glue. ABS, being a bit stronger of course, would support some unique work of its own.

      --
      You do not have a moral or legal right to do absolutely anything you want.
    3. Re:Really? by Garridan · · Score: 2

      Yeah, I see the difference -- but $800k to develop a hot glue gun just seems silly. On reflection (let's be honest, I post ontopic snarky FPs whenever I can) I see that most of their pledges are at the $75 mark, so this is mostly just people using kickstarter as a shopping site... and I'm totally getting one for my mom for her birthday.

    4. Re:Really? by Nefarious+Wheel · · Score: 4, Informative

      However, a jeweler's hot wax pen does have that level of finesse, and they've been around for decades. My dad used one in his shop, and they're configured for delicate work and fine trigger control. They're used to make wax moulds for lost wax casting in the manufacture of jewelry. I think you'd just have to raise the tip temperature and insulate the fingers a bit from the extra heat, and there you'll be.

      --
      Do not mock my vision of impractical footwear
    5. Re:Really? by Nefarious+Wheel · · Score: 3, Informative

      Scan down to "Master Touch". It's a wax pen in common use, and the web site is a jewelry supplier. http://www.zilverwerk.net/Assortiment/KerrLab%20-%20Jewelry%20-%20Products.htm

      --
      Do not mock my vision of impractical footwear
    6. Re:Really? by forkazoo · · Score: 3, Interesting

      Well they're selling them for $50, that's not bad. And a hot glue gun doesn't have the same level of finesse/control, from what I can see online..

      I haven't actually gotten to play with one personally, but I am friends with the guys involved in this. Basically, yes, there is an analogy to be made with a hot glue gun. But, have you ever tried to "draw" a cube with a hot glue gun? Good luck with that. With the 3Doodler, you are working with a much finer 3D printing style plastic filament. It's essentially the printing head of a 3D printer that you can use to draw freehand with. The plastic coming out of the head cools very quickly, and is relatively strong compared to something like glue, so you can make all sorts of interesting shapes. They may post some additional videos to help clarify how easy it is to draw with.

    7. Re:Really? by DrVomact · · Score: 2

      It's essentially the printing head of a 3D printer that you can use to draw freehand with. The plastic coming out of the head cools very quickly, and is relatively strong compared to something like glue, so you can make all sorts of interesting shapes.

      The "freehand" thing is what makes me think I'll never want one of these devices. I'm crappy at drawing things, and I expect that the best I could do with this fancy new tool is pretty much the same as I could do with a regular glue gun: make blobs, globs, and hardened plastic messes that I would quickly junk to hide my lack of coordination. For me, the attractive part of 3D printing is that I could use a computer to do it—I wouldn't have to depend on my hands, and my hand-eye-brain coordination, which all suck. Now if they would only make a 3D printer that I can afford...

      --
      Great men are almost always bad men--Lord Acton's Corollary
    8. Re:Really? by ThePromenader · · Score: 2

      But why are they calling it a 'printer'? The comparison to 'data-driven' (aka 'computer controlled') 3D printer is apples to oranges.

      --

      No, no sig. Really.

      ThePromenader
    9. Re:Really? by somersault · · Score: 2

      In their video, you also see them drawing 2D objects on a paper stencil on a flat surface (to assemble into a 3D object later). You'd have to basically be incapable of feeding yourself before you're at the level where you're unable to do that.

      Drawing in 3D would require more practice of course, but what they are saying is not "totally bogus"...

      --
      which is totally what she said
    10. Re:Really? by RevWaldo · · Score: 2

      Is the device "smart"? I was imagining that a device like this would contain accelerometers to help control the flow of plastic out the tip - the faster/slower you move the tip through the air, the faster/slower the plastic is spit out. That would make the flow more "natural" and reduce the risk of the plastic globbing up or being stretched too thin, which is what happens with glue guns.

      .

  2. Re:I'm not sure what it says about me.... by greywire · · Score: 3, Interesting

    Webshooters would be more interesting than a glorified hotglue gun.

    But if you can get one of these at Michaels in the future for $10 I'd probably buy one.

    --
    -- Senior Software Engineer, Attorney appearance services, locallawyerapp.com.
  3. Re:so it's basically ... by CanHasDIY · · Score: 2

    so it's basically a glue gun that squirts out colored glue.

    Uh, wouldn't that mean that 3D printers are basically just CNC mills with glue guns mounted where the mandrel should be?

    --
    An enigma, wrapped in a riddle, shrouded in bacon and cheese
  4. Re:so it's basically ... by jandrese · · Score: 4, Informative

    There are different forms of 3D printers, but that is a pretty accurate assessment of some of them. Others shoot a laser into a pool of material that hardens it in place or do other things.

    --

    I read the internet for the articles.
  5. What is the advantage? by hammeraxe · · Score: 4, Insightful

    Surely this goes totally against the main advantage of 3D printing - create a complex shape in CAD and click print - no crafting knowledge/skill necessary! You get accuracy and get to go do other stuff while your creation is being printed.

    This just looks like.... hassle.

    1. Re:What is the advantage? by Anonymous Coward · · Score: 3, Funny

      Obviously it should be combined with a programmable motorized pen holder. ;-)

    2. Re:What is the advantage? by jcoy42 · · Score: 2

      I can see several uses for this thing. As soon as I saw it I thought about re-bonding cracked plastic pieces, quickly making a plastic washer, using it to freeze electronic components that are likely to get bumped and break, or make a quick replacement knob for that amplifier I got at the thrift store. Heck, you could quickly draw an enclosure for a raspberry pi.

      As others above have said, it's mostly a hot glue gun for ABS, but I can think of 3 or 4 times in the last year where such an item would have come in really handy.

      For now I'll skip the $50 and continue using an old soldering iron and "salvaged" ABS. I'd certainly pick it up for $20.

      --
      Never trust an atom. They make up everything.
  6. Re:3d printing the new raspberry pi by Microlith · · Score: 4, Insightful

    I agree. Every week Slashdot should randomly pick one topic for which all stories are ignored. No exceptions. This way, everyone who dislikes a particular topic can be satisfied knowing that at some point, for some week, those stories will be ignored because they don't like them.

    It won't do a damn bit of good, but what the hey!

  7. Great by venicebeach · · Score: 2

    Just what we need, more plastic Eiffel Towers.

  8. Re:Glue gun? no wait.... by Em+Adespoton · · Score: 2

    The benefit of this ober a glue gun, other than the accuracy as noted, is that it can be used as a spot welder for ABS (so you can repair/join/tweak current 3D printed objects). They need to make tip attachments for smoothing/beveling etc....

  9. Re:Give credit where due by citizenr · · Score: 4, Informative
    --
    Who logs in to gdm? Not I, said the duck.
  10. Re:3d printing the new raspberry pi by smellsofbikes · · Score: 4, Informative

    If you don't already know this: you should consider the resolution you need pretty carefully. If you're printing stuff for 1:48 or larger models, an extrusion-based 3d printer will probably do okay for you and they're not too expensive: some exist under $500. But if you're working with smaller scales than that, you're likely to need some sort of photolithography setup and those are expensive to buy and surprisingly expensive to run because of the raw materials cost; it's hard to justify buying one for yourself compared to making the models and having shapeways.com actually print them.
    But if you're working larger-scale stuff, it's amazing how much use you can get from a cheap extrusion printer; once you have one, you start using it for scads of other things you never thought about doing previously.

    --
    Nostalgia's not what it used to be.
  11. Scalable Vector Printing! Now in 3D!!! by 140Mandak262Jamuna · · Score: 4, Interesting

    Tie this pen to a robotic arm to control the movement of the tip very precise. Also control the speed of travel and may be bead size. May be tie three or four such pens oozing different materials. That contraption is the equivalent of rendering images using scalable vector graphics instead of raster scanning!. If we adjust the temperature and material properties, and some kind of active cooling we could create very strong wire frames. May be these wire frames could form the skeleton with some kind of charge to accrete charge particles to acquire thickness, color and other surface properties. The possibilities are endless.

    --
    sed -e 's/Chuck Norris/Rajnikant/g' joke > fact
  12. Re:Glue gun? no wait.... by TheGavster · · Score: 3, Informative

    In their Kickstarter video, they show several models built up from the table's surface. This material also appears to harden much faster than a hot glue gun, and have a faster feed rate, given that vertical features formed just about as fast as ones on the table. One thing they do seem to need to work out is how to end a line; the operator in the video spins a tight circle and pulls away like a hot glass worker. It only sort of works here, since there's no flame to burnish the burr away with.

    --
    "Because Science" is one step from "Because old book". Try "Because of my experiment testing my falsifiable assertion".
  13. With accelerometers, you could record motion... by Anonymous Coward · · Score: 2, Interesting

    ...and use some sofware to replay it on a conventional 3d printer. In this way you could mass produce your "sketches" as "prints". You could also lay out models by sketching in air, import the "sketch" to your modeling program to refine it, then print a finished piece.

  14. Re:In the air? by FatLittleMonkey · · Score: 2

    Yeah, boo to the devs for not inventing anti-gravity.

    --
    Science is all about firing a drunk pig out of a cannon just to see what happens.