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**UriyVlasov** · 08-01-2012, 09:38 PM

I saw one of these things in action, the plastic printing isn't strong,
it is like glue being applied in layers and it dries, or something like that,
builds to 3 dimension, same event I saw an awesome small cad cam
machine, much more powerful for manufacturing, same type of design
skills needed, it was not that expensive.

These machines are mostly used to build prototypes of products,
to see how they work in 3 D, they are a tool basically for further
design and development, building components and building a working
mechanical prototype.

One day we may have the materials, like some sort of metal/ceramic.
To build something that works under extreme conditions.

Maybe we have them but they are not economically feasible.

What is engineering ? Taking science and doing something practical with it, economics is a big part of it.

Hellenistic Kingdoms had many gadgets ahead of their time, so did other societies, it wasn't until 2,000 years later that engineering and economics made use of them, like steam engines, mechanical computers, hydraulics, the science was known, steam engines were used as toys, the mechanics of the planets/navigation was put into a specific computer/slide rule, and hydraulics were used to make musical instruments like organs, so the science was known but they were way ahead of their time, not economical for use everyday. Those are just 3 good examples, today those technologies have entirely different uses of great significance. Another good one is the science of battery technology, batteries found in Iraq, don't know what they were used for, to zap people for fun ?

08-01-2012, 09:38 PM	#4
UriyVlasov Join Date Oct 2005 Posts 511 Senior Member	I saw one of these things in action, the plastic printing isn't strong, it is like glue being applied in layers and it dries, or something like that, builds to 3 dimension, same event I saw an awesome small cad cam machine, much more powerful for manufacturing, same type of design skills needed, it was not that expensive. These machines are mostly used to build prototypes of products, to see how they work in 3 D, they are a tool basically for further design and development, building components and building a working mechanical prototype. One day we may have the materials, like some sort of metal/ceramic. To build something that works under extreme conditions. Maybe we have them but they are not economically feasible. What is engineering ? Taking science and doing something practical with it, economics is a big part of it. Hellenistic Kingdoms had many gadgets ahead of their time, so did other societies, it wasn't until 2,000 years later that engineering and economics made use of them, like steam engines, mechanical computers, hydraulics, the science was known, steam engines were used as toys, the mechanics of the planets/navigation was put into a specific computer/slide rule, and hydraulics were used to make musical instruments like organs, so the science was known but they were way ahead of their time, not economical for use everyday. Those are just 3 good examples, today those technologies have entirely different uses of great significance. Another good one is the science of battery technology, batteries found in Iraq, don't know what they were used for, to zap people for fun ?
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