In a workshop in Nairobi, Chuma Anagbado gently squeezes a trigger to send high-pressure air through grooves made by a drill bit.
Hundreds of hours steeped in trial-and-error have led Anagbado here, crouched over a computer-controlled cutting machine known as a CNC router, as it carves out his latest piece, “Ola Aka.” “Ola Aka” means “bangles” in Igbo.