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Mark One carbon fibre 3D printer is now available to pre-order

by Mark Tyson on 19 February 2014, 16:00

Quick Link: HEXUS.net/qacayf

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Named after creator Gregory Mark, who also co-owns Aeromotions, The Mark One carbon fibre 3D printer was unveiled last month at the SolidWorks World convention in San Diego. This first of its kind printer is now available to pre-order, priced at $4,999.

"We took the idea of 3D printing, that process of laying things down strand by strand, and we used it as a manufacturing process to make composite parts," Mark told Popular Mechanics. "We say it's like regular 3D printers do the form - we do form and function."

Besides its carbon fibre printing capabilities, the machine is also able to print with fibreglass, nylon and PLA materials and employs kinematic coupling for consistent bed levelling - basically a self-levelling printing bed which clicks into position before each print.

"When you don't need the world's strongest material, the Mark One 3D prints a range of other materials to help professionals design and iterate quickly. Make super tough parts with our Nylon Filament. Or load our tried and true, low-cost PLA filament for those quick form and fit prints. And if you need the best cost-to-strength solution, crank out a print using our exclusive Fibreglass Filament that uses the same patented Continuous Filament Fabrication," suggests the MarkForged website describing this multi-material printer.

The Mark One printer is compact, measuring 22.6 inches (57.5 cm) wide, 14.2 inches (36.0 cm) tall and 12.7 inches (32.3 cm) deep. According to the company, the Mark One can print parts 20 times stiffer and five times stronger than ABS, a material known for its toughness and impact resistance, and it even has a higher strength-to-weight ratio than CNC-machined aluminium.

For $8,799 consumers can also get the Mark One Developer Kit which puts their pre-orders at the front of the line and includes extras such as a more Kevlar and two extra beds. Shipping of the printers will begin in the second half of 2014.



HEXUS Forums :: 10 Comments

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WOW! didn't think Carbon fiber would be in all this 3D printing stuff…now I'm excited for when I can get one! XD
Now waiting for the price to drop, or for cheaper versions. Possibilities are endless.
It sounds so cool. A 3D printer that can print carbon fibre, but it has a serious flaw in that it can only lay their chunky fibres down in two dimensions and their binding material doesn't have the same strength.

So it's very good at making flat objects that are stronger than ABS but for a 3D object you only get the maximum strength (which is WAY less than true carbon fibre) in two dimensions. There's no cross weave. There's no up and down weave. Any weaving has to happen in two dimensions.

So a 3D printer with an amazingly catchy sounding feature but said feature doesn't work at it's best in the third dimension.

So it's $5k for a two head printer and some new filament? No thanks.
Jenny_Y8S
It sounds so cool. A 3D printer that can print carbon fibre, but it has a serious flaw in that it can only lay their chunky fibres down in two dimensions and their binding material doesn't have the same strength.
You're only just scratching the surface there.
There's a lot more to carbon fibre than using woven sheets, although woven sheets are very important to create 2 directional “Tensile” strength and the way you make strong 3d carbon fibre shape rather than sheets it to wrap overlapping sheets around a mould or better still to weave it into the shape, which is complex and very expensive.

The next major point about carbon fibre is the resin used, in high end parts they use special compression or thermal resins, these have to be compressed or baked or both while they cure to get the maximum density and material “strength” out of it.
This means that you can make two objects that have the same shape, size, carbon fibre structure but by changing the resin used you can alter the “strength”, hardness, thermal resistance and weight.

Now lets move onto their lovely little graph and claims.
The graph shows flexural modulus, which is a fancy way of saying a bending stress test.
Now as fine as that is it's far from great as a way to back up their claims of “strength”, the stiffness claim is ok because that's what that test shows

I've put “strength” every time in this post, because as a term it's rather nebulas, correctly speaking any material object has 3 strengths in multiple axis, there is no one overall “strength”
And you also have to add in failure dynamics and hardness

The 3 strengths are Compressive (squeezing), Tensile (pulling) and Shear (twisting and bending)
Now how strong any two materials are comparatively depends on the usage demands of the tested material, eg in structural engineering compressive strength is generally used for the comparative “strength” of a material.
One thing to note about carbon fibre is that depending on the weave it has different strengths in any test depending on the direction of a force and generally has relatively weak performance in twisting shear tests.

Could this 3d printed carbon fibre material be useful? yes for the right application, although it cannot replace “normal” carbon fibre in any situation where it's used.
They very cleverly mention lots of places “normal” carbon fibre is used, implying their 3d printed carbon fibre could be used instead but never actually claiming that.

Overall some very slick PR and sales pitch which I'm sure will get them some sales.
Pob255
Overall some very slick PR and sales pitch which I'm sure will get them some sales.

Exactly. And that's why the demo piece they carry around to show off is a boring old sliver from a ‘wing support’ rather than a whole part (say said wing support).

They know exactly the weaknesses of the product but they're hoping they can hoodwink enough people into giving it some marketing inches.

Certainly worked here at Hexus. But then it doesn't take much to hoodwink Hexus.