I guess this all depends upon several factors Tim.
1) Materials on hand
2) Speed of which to find the issue
3) The enjoyment of making things
4) Nothing else to do
If I already have the materials on hand, it would not take that much of my time to create this and put it into use. However, if I have to hunt for the materials to build this, and then order anything missing, the delay in that will of course offset the cost of the already made unit. But this brings up #3 however and the pure enjoyment of taking raw components and making a useful object, test device, whirlie-gig, etc... out of them.
Great solution. Years ago, I actually remember one of my classmates doing something similar as a demonstration in an Electromagnetics course. However, this as just a demo of the principle with no actual application. Great example of engineering in the real world!
The 3D printing revolution seems to have a knack for quickly moving technology ahead by way of collaborative effort and even a little friendly competition -- all of course in the name of scientific advancement.
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A quick look into the merger of two powerhouse 3D printing OEMs and the new leader in rapid prototyping solutions, Stratasys. The industrial revolution is now led by 3D printing and engineers are given the opportunity to fully maximize their design capabilities, reduce their time-to-market and functionally test prototypes cheaper, faster and easier. Bruce Bradshaw, Director of Marketing in North America, will explore the large product offering and variety of materials that will help CAD designers articulate their product design with actual, physical prototypes. This broadcast will dive deep into technical information including application specific stories from real world customers and their experiences with 3D printing. 3D Printing is