> There must be a lot of wastage in manufacture is all I can say (and I
> don't know much about manufacture).
> The finished article, depending on size and design, I'd expect to weigh
> about 2-3 pounds.
Spot on, Jane - I calculated a blade about 1 to 1.5 kg, and the rest losses in production.
The 450 cubic centimetres describe the raw ingot.
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