Model Making

The physical model as a design instrument, not merely an output — a way of thinking in three dimensions that tests proportion, real light and shadow, spatial sequence and enclosure, and communicates to non-designers what a drawing or render cannot. The two governing distinctions — study/process models (fast, rough, cheap, built to think) versus presentation/finished models (refined, judged on craft) — and the taxonomy of model types: massing/block, study/working, concept, sectional/cutaway (the interior designer's signature), detail, presentation, and context/site. Why the sectional model, which cuts the envelope to reveal the inside, is the heart of an interiors course.

Scale is the single most important concept — the ratio between a model dimension and the real dimension it represents (1:20 means the model is one-twentieth of full size). Converting real to model dimensions; the scale rule; and choosing a scale for the purpose, with the rule that detail must be earned by scale (a 1:100 massing model shows form, a 1:20 room model shows furniture and materials). Reading orthographic plans, sections and elevations and 'unfolding' them into flat cutting templates (nets); grain direction; and the two precision issues that separate a good model from a sloppy one — grain, and accounting for material thickness at joints (the board-thickness problem).

The model-maker's palette as a design decision — sheet and board materials (foamboard, sunboard, mount and museum board, greyboard, corrugated card), wood (balsa, the premium basswood, MDF/plywood for bases), plastics and glazing (acrylic/Perspex, acetate film), massing media (blue foam, thermocol, plaster, clay), and linear and found materials plus scale figures and entourage — with which material suits which scale and model type. The tools — the steel rule, self-healing cutting mat, scalpel and snap-off knife, set squares, fine saw, files, tweezers, pin vice and hot-wire cutter. And uncompromising SAFETY, taught as workshop law: a sharp blade is safer than a blunt one, cut away from the body, cut against steel, ventilation and first aid.

The techniques that turn material into a model. Accurate cutting — multiple light passes never one deep cut, score-and-snap, keeping the blade vertical, cutting curves and cutting openings in the flat before assembly. Joining — butt, mitre and tab-and-slot joints, the board-thickness problem again, and dry-fitting square before gluing. Adhesives — which for which material and their pitfalls (PVA is foam-safe; solvent glue melts foam; superglue fogs clear acrylic; too much PVA warps card). Building floors, walls, removable ceilings, stairs and simple furniture at scale; forming curves; the designed base board; surface finishing and texture (suggest, don't replicate; matte over gloss); lighting; and photographing the model at eye level.

The capstone — building a sectional/cutaway interior model of a room at 1:20, from measured drawings through choosing the cut, converting to model dimensions, drawing templates, cutting, dry-fitting, assembling, furnishing, finishing, base-mounting and photographing; the craftsmanship and presentation standards it is graded against, and the common failures and how to avoid them. Then digital-fabrication awareness (not a CAD tutorial — cross-linked to Computer Studio): laser cutting (from vector files — never PVC), 3D printing (FDM and resin), CNC routing, and the key message that contemporary practice is a hybrid in which the machine removes tedious repetition so the maker's judgement goes into composition, assembly and finish — with Indian material and fab-lab availability.