3D STUDIO

Four simulators, four things that go wrong

Pull an impression on a platen press. Fold, pierce and sew a text block. Set type to a measure and read the proof. Turn a sheet over and watch the crease quality change. All four run in the browser with no install and no account.

These are educational models. Each one implements the relationship that actually governs the process — impression depth against pressure and packing, thread length against section count, ink volume against area and coverage — and simplifies everything else. Use them to understand the direction and rough magnitude of an effect, not to predict a specific job. Real presses and guillotines do not simulate: follow the instructions that came with your equipment, and read the safety notes on every page.

Performance, accessibility and what happens when it fails. The 3D library is loaded only on these four pages and, on the home page, only once the preview is scrolled into view — it is never downloaded on the rest of the site. Phones and tablets get a static diagram first, with a button to switch to 3D anyway. If WebGL is unavailable or the library fails to arrive, every simulator shows a drawing of the same thing with an explanation, and the parameter panel keeps working. If your system asks for reduced motion, all automatic rotation and animation stops. Rendering pauses when the tab is hidden, and the quality drops automatically if the frame rate cannot hold.

Checking WebGL…