The Buum typeface evolved from the explosive lettering originally designed as part of a house style for an interactive science centre for kids. Beside its usual application as a strong display font in print and on screen, the bold angular shapes of glyphs are adapted for negative machine- or laser-cutting into structural materials such as iron sheets, plywood, or stone ... and for creating tactile expressive surfaces and 3D objects. This pictogrammic and dazzling font remotely echoes the morphology of the lettering of futurism and constructivism, when avant-garde typography was once an exciting adventure. It is a lettering building kit with a number of stylistic alternatives of glyphs that enable a user to shape the same word differently each time. Buum is recommended by nine out of ten old school futurists, favored by steampunk CNC operators and respected by the majority of infantile anarchists.