printed composites

Not sure about the end quality. I mostly doubt ability for a void free part and getting the resin ratio right.

Here’s a link

http://3dprint.com/worlds-first-carbon-fiber-3d-printer-announced-the-mark-one/

http://www.3ders.org/articles/20140128-markforged-mark-one-world-first-carbon-fiber-3d-printer.html

It’s like a very fine robotic tape layer, without a starting mold.

I don’t fully comprehend this, is it a joke?

Without continuous strands of fibre how can there be any additional strength beyond the maximum achieved by the resin alone?

not sure about how their system works, but there was a kickstarter campaign recently for a project where these guys were making carbon fiber filament. I’ll bet it’s the same deal with this machine but $5k is pricey now a days for a 3d printer.

though after watching the video it does look much like it’s long length fibers… which would be a nice thing to be able to do.

theres always http://www.tailoredfiberplacement.com/ , but it’s a totally different process and much further from low cost availability.

Do you mean the X-Winder if I recall correctly? I saw this yesterday, and thought yes, it is a cf composite, but it’s not engineered, just made of. I’m sure the print head isn’t weaving, just laying it out, right?

I think it “sends out” a continuous cf yarn with resin at the same time.

A few things I noticed.

The Carbon is a Thermoplastic because their is no resin bath or external tank that impregnates the fiber in the head. And the material has no backing material to prevent it from sticking together like traditional prepreg rolls or a better example are the reels/rolls in AFP/ATL.

Note the Carbon prints are one continuous fiber which makes me think that it doesn’t have the ability to cut the fiber in the head and restart in another location.

Since it can’t cut on the fly and after watching the video the head appears to be a traditional FDM “hot glue gun” head, this is another reason I think it uses Thermoplastic.

Okay, so I saw the second video and understand the there is one continuous strand of fibre(s) but that also means that fibre orientation cannot be in all planes or am I wrong on this?

Don’t get me wrong I think 3D printing is amazing but that 3D carbon printing will not be the ‘be all and end all’ of other techniques, it will have it’s uses but also many downfalls.

I think it is thermoplastic, which is fine. Not sure about continuous strand fiber, would be nice even if there is no possible Z fibers. Though having 3d fiber orientation would be the best.

There was this carbon fiber reinforced PLA Kickstarter project https://www.kickstarter.com/projects/1375236253/proto-pasta-gourmet-food-for-your-3d-printer

Very much along the same lines but not the same,as it’s PLA and reinforced with short fibers.

FarbinKaiber: yah tailored fiber placement is for creating preforms, not a printer. you still gotta infuse the fibers with resin. Not the xwinder, i’m not sure I know that one. These are highly specialized machines and probably extremely expensive. The technology is based off of the CNC embroidery machines and is produced 2 dimensionaly to become a 3 dimensional preform.


http://en.wikipedia.org/wiki/Tailored_fiber_placement

Hey all, the MarkOne is…sigh just no.

It uses thermoplastics, as stated on the site. It’s a 3d printer with continuous tow placement. However, which has not been answered to me, or on the site, is how they get ANYTHING besides hoop winding. Any part they show, only shows fiber in the XY plane. Make an airfoil printed straight up…fine, but ANY force on that airfoil, it’s gonna snap. You don’t hoopwind a tube and expect it to survive anything, including crushing loads. They are pulling this out their arses, and will not succeed until they show they can align the fibers in directions needed for actual strength.

Riff, I agree… but it’s at least a step in a direction.

WIth this thing you’d have to laminate afterward… and if that’s the case why bother? Might as well just print in ABS and call it good. I did see another group that were making a filament for 3d printers that had carbon, glass, or some reinforcement material in the filament. A fiber reinforced filament, with short fibers, would be a pretty good deal. It would beef up the mechanical properties of the ABS or PLA, which wouldn’t hurt. But these machines are really rapid prototyping machines.

http://freespacecomposites.com/

http://www.compositesworld.com/blog/post/two-visions-of-3-d-printing-in-cfrp

https://www.youtube.com/watch?v=bZPHGymfI-o#t=2152