Printer 3D [general debate interests technologies]

[Christophe]

CERN starts the 3D print: http://home.web.cern.ch/about/updates/2 ... ion-centre

[Christophe]

Today in La Villette: http://www.cite-sciences.fr/fr/conferen ... 025081414/

A particular product itself hull of his mobile or his bedside lamp. A professional factory quickly and inexpensively a tool prototype or a model of a house. A manufacturer creates air components in a single piece and using less material. All this is possible thanks to the three-dimensional printing (3D), a technique invented thirty years ago and poised to enter our homes. A revolution ?

This day of round tables, workshops, demonstrations, projections, targets the general public, students, civil society and professionals who question the promises and risks associated with the development of 3D impression.

On November 23, 2013, the Cité des Sciences organized its first Forum de la Villette around issues related to 3D printing. On the program: various round tables and workshops to explore the range of possibilities.

http://storify.com/agenceondine/fv3d-pr ... ression-3d

[Flytox]

Accuracy, surface finish achieved by laser fusion of metal powder is also relatively coarse. In the photo it is not the effect of pixelation of the image that gives this aspect granita.



So the room will not be systematically finished out of the machine and it will often be machined to obtain suitable roughness or a specific rating in a particular defined area. By metallurgically against the qualities of some alloys that can be seen passing in the lab are respected.

The price of this piece made of electro erosion or electron beam that should be plentiful!

[Christophe]

The printer OpenSource K8200 is available on the shop: https://www.econologie.com/shop/impriman ... p-511.html

The stock is quite limited, the supply long enough at the supplier, so for those who are interested to have one under the tree, not Avoid dragging too ...

For regular members of forums, the 10% reduction is valid + carriage paid = the best price on the net for this 3D printer (big competitors included ...).

[Christophe]

Organic materials for 3D printers:

The 3D printers do they mean the end of mass production and waste? Yes, but on condition that feed them other than with the petroleum derived plastics ... The inventors already working. Review of ideas.

The printer 3D, it smells the future, full nose. Since that 2009, one of the techniques of printing 3D - modeling deposit molten filaments (1) - is now in the public domain and that of friendly DIY communities seized in these machines, yet used for a good ten years by industry, all eyes focus. Since they can manufacture parts on demand, they will sign the end of mass production, we read already. But also to excessive gaspi. Certainly ... Except that this time, besides the industrial machine that sometimes feed on sand or resin but are primarily used to develop prototypes, machinery for manufacture of large public goods globally fueled plastics ... derivatives of petroleum.

"The rapid prototyping machines (read the 3D printers, note) work mostly with ABS type filaments. It is the plastic that makes up most of the industrial products industry objects like Lego, "says Luyt Bertier, founder of Fabshop. Another material commonly used: PLA, a corn starch derivative. Better than the ABS since it uses no petroleum derivative and is - Forward - biodegradable. Except that the PLA consists of US corn and very often the result of intensive agriculture based tractors, fertilizers, pesticides. Worse, "90% of US corn is GMO" said Luyt Bertier. Finally, these maize crops for the production of plastic may compete with food consumption, such as biofuels today.

For the moment, not too worry. The tonnages earned by these machines are a drop in an ocean of plastic. But tomorrow ? In the future more sustainable, manufacturers are already working on new options. For if the machines "was very little progress to expect, apart from making a larger machine, which works faster, the real challenge lies in the variety of materials and the creation of a machine that will multimaterials . If you ever want to have 3D home, it has to serve a purpose, "says Luyt Bertier. "The materials and their implementation is the key to everything, said Alain Bernard, director of research at the Ecole Centrale de Nantes and member of the French Association of Rapid Prototyping (WARP). If you master the material, you are the king. "

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A biodegradable plastic made from cereals:

The waste produced by 3D printers is the fight of the start-up Toulouse eMotion Tech. With another Southwest society Vegeplast - originally including integrated material in biodegradable capsules compatible with Nespresso machines - it is working on a new supply for 3D printers.

Advantage: Vege3D? Consumable 100% natural and biodegradable, ensuring partners. Clearly, simply slip it into your compost once decreed object in later life. A bit like the PLA, except that if it comes very often the United States, the VGA is' locally produced and intended for local consumption, "says Guilhem Peres, founder of eMotion Tech.

Disadvantage: Cereals - we will not know more, the secret remains well kept - that make up the risk they consumable Vegeplast to competition in our plates? "We are so insignificant in volumes that there is no problem," says Guilhem Peres. But tomorrow ?

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A material made of algae:

The idea was born from the encounter between Bertier Luyt of Fabshop Rémy Lucas and company Quimpéroise Algopack. If the expertise of the first concerns the 3D printer, the second developing since 2010 material from brown algae harvested at sea which strongly resembles plastic. Into a usable resource by 3D machines, man has developed another product called Seaweed Filament (SWF), a mix of algae and a plastic binder.

The advantage: The algae are found naturally. Better, to grow, they need neither fertilizer nor pesticides and do not consume arable land. Finally, they may come to close, unlike other ABS or PLA type materials. For them, "our material volumes are not large enough to fill containers that could cross the Atlantic in 4 weeks. Everything is done by air, "says Luyt Bertier.

Finally, the founder of Fabshop, the SWF has strong technical qualities: "It's a bioplastic which has a lower density. The parts are lighter at equal volume. It also has a touch very close to the cork, warmer than other plastics. And, it provides very good reading for details, including sculptures and complex objects. "
Disadvantage :
"We know that compared to world consumption of plastic, our impact will be modest. It is a small stone, but it is with small stones that made the great walls, "says Luyt Bertier.

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recycled waste

It is still in its infancy, but the "makers" try it. In January, an American student presented the Filabot, a machine that transforms everyday plastic waste (bottles, packaging ...) into a material that could integrate 3D machines. A few months later, the Filamaker arrives on the circuit. An open-source machine able to grind objects already designed by 3D printer and turn them into new filaments.

The advantage: It seems obvious. Reusing already engineered materials is done with the concept of waste in the system. Recycle plastics from life everyday consumables, is to restore a function of surplus materials. Better, this process could allow users to have access to low-cost materials. Interesting, considering that the price of the filament ranges from 40 and 50 dollars (between 29 and 36 euros) per kilo.
Disadvantage :
"The main problem of the reuse of domestic plastics for 3D printers is that it must be sorted to obtain a homogeneous plastic. Because plastics have different melting points, different viscosity. You can not mix and put them in the printer like that, "said Alain Bernard. Finally, home recycling - such as printing - may cause health problems. Last summer, researchers at the Illinois Institute of Technology in Chicago assessed the ultrafine particles related 3D impression. And urged caution.

(1) Since 28 January, another technique called "laser sintering" and which uses a laser to solidify the material fell in turn in the public domain. She had been patented in the years 1990 the DTM company.

http://www.terraeco.net/Algues-cereales ... 53871.html

[Christophe]

Aired last night: https://www.econologie.com/forums/envoye-spe ... 13133.html

[beaver faithful]

Hello,
I have read every page of this article without having been able to find vital information for me.
What types of file formats 3D are read by these printers?
I hope we can make them swallow the IGES or SAT, STL, DXF3D or something like this here in order to make them compatible with CAD 3D commercial software.
Otherwise no interest if one should only get ready examples found on the net.

[Christophe]

this one https://www.econologie.com/shop/impriman ... p-511.html uses Repetier http://www.repetier.com/ which uses Gcode format whose native and OBJ STL ...

After plenty of free converters.

Default on http://www.thingiverse.com/ this is the .STL in the vast majority of cases, therefore usable by Repetier ...

[JLB29P]

"... what you can do with a 3D printer ... it's not very interesting ..."

An example: I had to put in an electronic box 3 9V batteries; out, if commercially compartments for 1 or 2 batteries, I have not found 3 batteries.

As it was 10 me, it's not worth making a special manufacturing (too expensive) even folded sheets.

I released in realizing a small printed circuit assembly (variant of Lego)

Next time I will have that kind of problem to solve, it will be using a printer 3D!
Ditto for a plastic case of non-standard dimensions!
Even the front and rear with their piercings and markings (unless it takes metal for rigidity or shielding).
The labeling may be made in relief and in color!
I will not be dependent on industrialized products and lead times + machining + screen printing !!!

This is only an example applied to a craft production of small series.
For decorative items, there are certainly many, many other applications; anything that does not justify the creation of molds for the series, or for mass production before testing in order to have an accurate rendering quite the appearance of the final product; shape variations and color ...
Also the models for architects for fans of small trains ...
You can also develop your own games. Are you missing pieces for checkers, chess or small horses, do yours with thrombin President or your stepmother ...

[Christophe]

... And quite a 3D printer can also do ... molds objects to make larger series! Recess, as it is plastic, it is limited in low temperature ...

See this feedback by another member: https://www.econologie.com/forums/post271612.html#271612