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The Kneeslider

Doers Builders and Positive People

Rapid prototypes

By Paul Crowe

Rapid prototype functional gunRapid prototyping is a relatively new engineering process where some very interesting work is going on. The fab labs we spoke of earlier do rapid prototyping using printers that build up 3 dimensional objects, one thin layer at a time. Some of the objects they build can’t really be made any other way but one of the things you couldn’t do with the process was build anything that had mechanical function, pieces had to be assembled first.

Well, one more hurdle has fallen and now they do that, too. The picture here is of a working gun, not sure what exactly it does, whether it’s just a trigger clicking function or it works in some other way but whichever the case, it supposedly works right out of the printer. Looking closely, it looks like there’s a functional spring down inside the clip. Hmm… Think of the implications of being able to make functional objects this way. Think of future manufacturing. It’s hard to visualize how this can even be done but very ingenious design certainly plays a part. Very cool.

via We Make Money Not Art

Posted on December 11, 2005 Filed Under: Alternative thinking, Workshop & Tools


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Comments

  1. todd says

    December 13, 2005 at 4:20 pm

    the current technology is for prototyping or visual models only. Usually (as in the photo) the material used is a somewhat fragile resin that wouldn’t last in consumer applications. There are machines that print out ABS or even powdered metal components that are actually used in production. The process for these parts is still pretty expensive considering the amount of time it takes to print a part. The sample gun and its components probably took around 20 hours to “grow”. That is fine if you only need to make one or two parts as sometimes machining is too complicated or nearly impossible. In the case of a gun though, machining the parts from steel is necessary to its function. The more promising application for these processes is the ability to create molds or even dies for repetitive, conventional casting or injection molding processes. There is quite a push in the industry by a few leaders to create “personal” 3D printers for under $1000 in the next coulple of years. It’s very Star-Trek Replicator to think that in the future one could download or create from scratch the 3D files required to print out almost anything he would wish. I can’t wait.

  2. dave says

    December 14, 2005 at 11:49 am

    Nice to see you’ve posted this tech. for the masses to see, and possibly better understand.. It’s very interesting equipment. Several parts on our Wraith motorcycle were prototyped in this fashion, and then actually put together to verify fitment, etc… Then we either laser-scan the finished product, or simply convert the files over to 3-axis machine tool programs.. The cool thing about it, is we can have guys ‘draw’ this stuff in SolidWorks, and then just burn it to a disc, and make a part in just a few hours, to verify design. Only problem is expense. This is not cheap tech.

    We like to think of it as a star-trek replicator as well.. We ask for a part, the machine spits it out… Ain’t technology cool?

    dave

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