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Engineering Materials

3D Materials Expand Design Options

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Beth Stackpole
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Re: Materials mix key to 3D printer adoption
Beth Stackpole   7/19/2012 7:16:19 AM
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@samgreen: That's what I was suspecting--an algorthim driving on-the-fly mixing or creation. Thanks for clarifying.

samgreen
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Re: Materials mix key to 3D printer adoption
samgreen   7/18/2012 10:31:59 AM
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Hi - some clarity on our Digital Materials: Digital materials are composite materials made of 2 physical cartridge base materials. The two Objet model materials are integrated in specific concentrations and structures to provide the desired mechanical and thermal properties; enables close simulation of the target product materials. Digital Materials are generated on the fly during the printing process using a software algorithm which defines the  jetting pattern which results in the composed materials structure. Digital materials do not exist as cartridge-based materials but only in the resulting model or part.

Ann R. Thryft
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Re: Materials mix key to 3D printer adoption
Ann R. Thryft   7/16/2012 2:12:48 PM
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That's my impression, too, Rob. Objet has been quite consistent in its drive to make more materials available for its 3D process, to serve the need for function as well as for form and fit, in prototypes and models.

Fred_Murrell
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Re: Materials mix key to 3D printer adoption
Fred_Murrell   7/13/2012 2:41:22 PM
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"Digital" materials is the new "i" anything, strictly a marketing term.  These materials are manipulated by an electro-mechanical device controlled digitally and the shape that it making arose from a digital file.

Semantic argument aside the technology is fascinating and the proliferation of materials that are compatible with these 3-D printing processes can only serve to make the life of the design engineer simpler. Printing a 3-D part is a first step in the evaluation of a design, does it look, fit, etc. as I expected. If so, good, I can make a more functional prototype with more appropriate materials, if not, good, I didn't spend too much money or waste too much time.

I look forward to the growth of this technology, but I won't be calling these 3-D inks "digital materials".

NadineJ
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Re: Materials mix key to 3D printer adoption
NadineJ   7/13/2012 1:42:31 PM
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Thanks Beth.  That's what I suspected.

Ann R. Thryft
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Re: Materials mix key to 3D printer adoption
Ann R. Thryft   7/13/2012 11:52:48 AM
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Beth, thanks for that succinct explanation. A production sample/working prototype made with actual materials would be the best test, but that's not always possible, due to the cost of tooling alone, not to mention the high cost of small, non-production amounts of materials, for example, or the time involved. Which is why the 3D prototype/model industry got started: saving time and money and getting a lot closer to an understanding of the end-product.

Ann R. Thryft
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Re: Materials mix key to 3D printer adoption
Ann R. Thryft   7/13/2012 11:51:53 AM
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There seems to be some semantic confusion. Form and fit are more than visual--if a part fits with another part, that's not visual, that's mechanical. To do so, it must be the right form. Functionality of a part is only visual if the part's looks have something to do with its function. It's not the materials that simulate anything, it's the part made with those materials, which with 3D technology can be a lot more than a mockup.

Beth Stackpole
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Re: Materials mix key to 3D printer adoption
Beth Stackpole   7/13/2012 9:29:56 AM
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I'm not sure these 3D printed prototypes, digital materials or not, are meant to be a full-on replacement for building a real working prototype with real materials. I think they are meant to be part of the process and help eliminate the need for building so many different variations of physical working prototypes, which can be costly and time consuming. These methods are far more efficient and less expensive compared with building expensive tooling.

NadineJ
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Re: Materials mix key to 3D printer adoption
NadineJ   7/12/2012 4:09:44 PM
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@Ann-Form and fit are visual.  How can digital materials in a 3D mock up simulate function?

Maybe I'm old fashioned but testing a sample made with a material that simulates rubber is no match for a test on a sample made with the actual rubber that will be used in production.

Does the simulated function just give an estimate of performance in order to speed up the development process?

Rob Spiegel
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Re: Materials mix key to 3D printer adoption
Rob Spiegel   7/12/2012 4:02:14 PM
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The video says a lot, Ann. This seems like a logical step in the development of 3D printing, that companies would begin to compete on the availability of materials.

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