Bone fabrication by university with recycled aluminium (6)

I believe the answer is:

fibula

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'bone' is the definition.
(I know that fibula is a type of bone)

I can't explain the rest of the clue.

(Other definitions for fibula that I've seen before include "Human leg-bone" , "Outer bone in the calf" , "A lower-leg bone" , "Bone of the lower leg" .)

I've seen this clue in the Sydney Morning Herald.

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