The process begins before the session opens. The customer submits a preparation package: a geometric file of the relevant head scan or base form, thickness specifications for any protective or foam layers that must be accommodated, and plan-view sketches or references indicating the desired external silhouette. These inputs are loaded into the parametric system in advance, so the session starts with constraints already resolved and geometry already oriented to the customer’s specific headform.
When the session begins, the technician is working at a purpose-built control interface — a touchscreen and tactile surface mapped directly to the parametric model. Design direction given in plain language translates immediately into precise geometric action. Tighten a crown line, extend rear coverage, shift a shell regime, sharpen a taper in side view — each instruction becomes a parameter adjustment, and the geometry responds within seconds. The technician functions as the instrument; the customer steers.
On the customer’s side, a WebGL viewer in a standard browser receives mesh updates pushed directly from the parametric engine. No plugin, no installation. The viewer gives full rotational control, standard orthographic views, and independent layer toggles — headform, protection envelope, outer shell, and construction lines can each be isolated or combined. Markers can be placed directly on the model to anchor specific areas of discussion. The geometry the customer sees is always current.
The session runs in iterative rounds. A direction is given, the technician adjusts, surfaces regenerate, and the result is reviewed — typically within thirty seconds per cycle. At any point, the system can capture a full set of orthographic and isometric views and assemble them into a structured PDF booklet, available for download within the session. Mesh outputs at selected resolutions can be unlocked and pushed to the viewer at milestone points, giving the customer working geometry to examine and retain as the session develops.
At the close of the session, the customer leaves with clean single and double surface geometry built to their headform and constraints — a foundation ready for downstream detailing, refinement, and development into prototype and production files. NURBS surface output, where included, is production-ready: suitable for CNC toolpath generation, further CAD development, and manufacturing handoff. The parametric files underlying the session are retained by default; transfer or deletion is available by agreement.