Design Realization 


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This time: Manufacturing & Materials


Manufacturing is undergoing a revolution:
Traditional methods:
Casting, molding, fusing, slumping
Milling, lathing (non CNC-versions)
Stamping
Rolling, extrusion

Shape is “write-once” (not programmable) in these methods.


Next-wave Manufacturing


Reprogramming shape:
CNC machining: A computer outputs a path for a cutting tool to create a specified surface.

Not new, but now inexpensive, PC-based.

Plastics, wood, metal, glass.



Milling


Milling involves a moving XYZ head that cuts into the workpiece:

Bits can achieve differentfinishes.


Milling Example


CNC milling example (Deskproto web site)

Finish is quite smooth
ballnose cutting tool.

Lots of waste, but can be recycled!


Next-wave Manufacturing


PC-boards:
Created with CAD tools.
Photographic reproduction:
Low cost in volume.
High complexity possible.

Multi-step process, BUT:
Web-based services have 24-hour turnaround, low cost.