Explainers

Interactive isometric figures that explain how something works by building it as a real object on a bench.

• 01Root canal treatmentA sectioned premolar taken through access, working length, shaping, irrigation, filling and restoration.
• 02CT scannerA gantry, rotor and table that build a slice of the body from many X-ray projections, read out in Hounsfield units.
• 03Fountain penA sectioned pen on a test rig: ink pulled along the feed by capillary action, a comb of fins that buffers it, and bubbles of air let in through the breather hole.