Technology
3D-printed handles for flint-knapped hand axes
The definitive human tool gets a 21st-century upgrade with 3D-printed handles that artfully highlight the hand axe's sheer range of uses
Regulars
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The definitive human tool gets a 21st-century upgrade with 3D-printed handles that artfully highlight the hand axe's sheer range of uses
Layers of stretchy skin, hard bone and jelly-like tumour in this 3D-printed model skull give surgeons an experience that feels just like the real thing