Magnesium bodies

Started Mar 26, 2012 | Discussions thread
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Leonard Migliore
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Re: Stiffness
In reply to Bill Force, Mar 28, 2012

Bill Force wrote:

Very true until you get into "matrix metals" such as they use in helicopter seats, bicycle frames etc. Extremely strong and light weight and they do not crawl like some metals. I've always wondered why someone hasn't used this compound in camera bodies?

Metal matrix composites, like boron fiber in aluminum, are indeed stiff and strong. They also be dogs to cut threads in. This makes them fairly unsuitable for things like cameras, which tend to have a lot of tapped holes in the main structure.

That's also why carbon fiber reinforced polymers aren't too common for this use. Graphite-epoxy is really stiff and light. The problem is, you have to incorporate inserts in them anywhere you want to attach something, like a lens. No way you would do this in a consumer item.

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Leonard Migliore

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