In 1762, Diderot’s great Encyclopédie printed a picture of how to make a pin. Not the pin. The making of it — every step drawn out, the way you’d draw a saint.
At the top of the plate sits a workshop. Men at benches, light from a high window. Below them, the parts: wire, dies, tiny machines, each one floated in white space and numbered like evidence. Nobody had ever drawn plain work this seriously before. And it was beautiful.
That layout — the scene up top, the parts taken apart below — is the grandfather of every exploded diagram you’ve ever stared at. The cutaway engine. The skeleton clock under glass. The patent drawing for something you’ll never own.
So why do we keep looking?
Partly it’s that a diagram makes a promise: follow the lines and the whole mysterious object falls open into reasons. And partly it’s just lovely. The soft grey of an old blueprint. The fine cross-hatching that gives a brass gear real weight on paper. It holds still. Nothing pings at you. You bring the movement.
Here’s the thing, though. Nobody hangs a pin diagram because they plan to make pins.
What we’re after is a feeling, and it has a name. In 1757 Edmund Burke separated the beautiful from the sublime — the beautiful being small and soft, the sublime being huge and a little frightening. For ages the sublime meant mountains and storms. Then machines got big enough to join them. The historian David Nye called it the technological sublime: the real, church-sized awe people felt standing under a railway bridge or at the foot of the Hoover Dam. A cutaway engine on the wall is a tamed piece of that. A thunderstorm in a frame.
Which is why scale matters when you hang one. A big engine cutaway — the kind in the engine wall art collection — earns a wall you read from across the room, the way you’d step back from anything powerful. Crowd it into a corner and you waste it.
Clockwork pulls the same trick from the other side. An engine floors you with power. A movement wins you with precision.
When Christiaan Huygens set a pendulum swinging inside a clock in the 1650s, he wasn’t only telling better time. He was showing off the era’s biggest idea — that the whole universe might be clockwork, wound once and left to tick. So the Swiss built little machines that could write by hand, and the Victorians put skeleton clocks on the mantel with the case stripped off on purpose. The works were the point. The wonder was never the time. It was watching the thing keep it.
Now, the man thing. It feels natural — engines, garages, the study with its open watch movement under glass. It isn’t. The Encyclopédie plates weren’t “masculine.” They were knowledge, and they hung in the homes of anyone rich enough to subscribe.
The coding came later, with the factory. In the 1800s the workshop turned male and public, and the home turned female and decorative. Pierre Bourdieu’s Distinction (1979) put it plainly: taste isn’t born in you, it’s a way of telling the world who you are. To decorate with machinery is to drag the workshop indoors. And here’s my one firm opinion — the “manliness” of it is just an accident of industrial history that we’ve mistaken for something deep.
Which is freeing, really. It was never about being a man. It was about loving how things work.
The same itch keeps coming back under new names. Steampunk — a word K.W. Jeter half-jokingly coined in 1987 — is basically engine and clockwork married: brass, gears, Victorian machines wearing their guts on the outside. Hot-rod culture got there first, out on the dry lakes at El Mirage and Bonneville, where the whole point was the engine left bare and chromed. Different decades, same instinct. Show the works. Don’t hide them.
One real tip if you put any of this up: light it from the side. A fine engraving, or a piece of clockwork wall art, comes alive under a lamp or window hitting it at an angle — every cut line throws a tiny shadow. Hit it straight on and it goes dead flat. Same goes for a watch movement behind a glass caseback: cause and effect you can actually see, in a world that mostly hides both.
My own favourite is a cutaway of a radial aircraft engine, the pistons fanned out like petals around the hub. I can’t fly a plane. I couldn’t fix a watch. But late in the day, when the light comes in low across the print, every line throws its little shadow and the whole engine seems to breathe — and for a second the world feels like somewhere you could take apart and understand. Then the sun moves. It’s a picture on a wall again. That’s enough.