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How to CNC machine an ergonomic test model

Styling block model to test the handling of a camera

The Microsnapper is a device in which a digital camera, a PC and a memo-recorder are integrated. After making a photo all types of extra information can be added, using the built-in touch-screen, the microphone or the barcode-pen. Some important demands were present for the housing:

• Sufficient grip for the user to handle it using one hand only
• Easy handling, for all functions
• Good looking: the appearance suggesting a light and small device
• Room for all parts to be built in (of course)

To really evaluate these demands a prototype was needed. Where renderings like the one shown below give the designer much information and can be used for presentation purposes, for both ergonomic evaluation a real prototype is needed. A styling block model (solid model) has been created, using an STL file exported by Microstation (tm).

This is one of the earliest DeskProto projects: the model was created in 1994.




We have created a number of massive prototypes of the camera, using PUR (PolyURethane) foam (finished with one simple layer of paint), for a visual evaluation during the design process.




After that we have created a prototype of the final design, using Cibatool (Renshape) model-material. This prototype has been used as a mould for thermo-forming: the shells created this way are used to make a completely functioning prototype, thus testing the fit of all inside parts.




The Microsnapper has been conceived and designed by the Dutch company Chess in Haarlem, designer Mark Fleuren.