Unit IIIModel Making

Materials & Tools

The maker's palette and kit — and knife safety as workshop law.

≈ 50 min + safety inductionByAmogh N P· Architect & interior designer

Material choice is a design decision — colour, texture, workability, cost, and the scale it suits. Learn the model-maker’s palette (foamboard, sunboard, mount board, balsa, the premium basswood, acrylic, blue foam) matched to scale and model type, and the tools of the trade. And SAFETY, taught as workshop law — because a sharp blade is safer than a blunt one, you cut away from the body, you cut against steel, and first aid stays within reach.

Learning objectives

By the end of this lesson, you will be able to — mapped to the course outcomes for Model Making:

CO3 · Understand

Identify model materials and match them to scale and model type.

CO3 · Understand

Identify the model-maker's tools and their uses.

CO3 · Apply

Work with correct knife and workshop safety at all times.

CO3 · Analyse

Choose materials and tools appropriate to a model's purpose.

The maker's palette

Materials & the tool kit

Boards, wood, plastics and massing media matched to scale and model type, and the steel rule, mat, scalpel and the rest of the kit.^{[1, 2]}

DiagramThe model-maker's material palette — foamboard, mount board, basswood, acrylic and blue foam, matched to scale

DiagramMatching material to model type and scale — study/massing versus presentation versus detail

The sheet palette

FOAMBOARD (foam-core) — a paper-faced polystyrene-foam sandwich, light and rigid, ideal for walls and floors at 1:50–1:20 (common 3 mm and 5 mm). SUNBOARD (foamed PVC) — the ubiquitous, cheap Indian substitute, solvent-glue-friendly and laser-cuttable. MOUNT BOARD / museum board — dense card, the workhorse of presentation models (museum board is acid-free/archival). GREYBOARD / chipboard — cheap and neutral, superb for study models. CORRUGATED CARD — coarse, for quick massing only. Choose colour, texture and thickness as a design decision.^{[1, 2]}

Workshop law

Tools & safety

The tool kit, and knife and workshop safety taught as non-negotiable law — a sharp blade is safer than a blunt one.^{[1, 3]}

DiagramThe model-maker's tool kit — steel rule, self-healing cutting mat, scalpel, snap-off knife, set square, fine saw and tweezers

DiagramKnife safety as workshop law — a sharp blade is safer than a blunt one, cut away from the body, cut against steel

Workshop law, not a suggestion

A SHARP blade is SAFER than a blunt one — a blunt blade needs force, slips and cuts you, while a sharp blade cuts predictably with light pressure. Change blades often; a fresh blade is a safety measure. Let the blade do the work with multiple light passes, never one forced deep cut. Match the blade to the job — a fine scalpel for fine cuts, a snap-off for thick foamboard; forcing a small blade through thick stock snaps the tip.^[3]

Myth vs reality

At a glance

Aspect	One side	The other
Blade sharpness	Myth: a blunt blade is safer	Reality: blunt needs force and slips — sharp is safe
Thermocol vs foamboard	Thermocol: coarse white beads, crude massing	Foamboard: smooth paper faces, precise sheet
Perspex vs acrylic	Myth: different materials	Reality: Perspex is a brand name for acrylic (PMMA)
Cutting guide	Myth: a plastic ruler is fine	Reality: the blade shaves it — use steel
Balsa vs basswood	Balsa: soft, cheap, bruises	Basswood: fine-grained, crisp, holds detail

Vocabulary

Key terms

Foamboard / sunboard

Rigid paper-faced foam / foamed-PVC sheet — the workhorse for model walls and floors.

Mount / museum board

Dense card for presentation models; museum board is acid-free and archival.

Basswood vs balsa

Basswood is fine-grained and crisp (for finished detail); balsa is soft, cheap and bruises.

Acrylic (Perspex)

Rigid clear/coloured PMMA sheet for glazing and bases; Perspex is a trade name for it.

Self-healing mat

A cutting mat whose surface closes behind the blade — protects blade, table and squares work.

Sharp is safe

A sharp blade cuts predictably with light pressure; a blunt one needs force and slips.

Apply it

Making task

Write a materials-and-tools shopping list for building a 1:20 sectional model of a room, choosing a specific material for each part — walls, floor, glazing, furniture, base — and justifying each choice by scale and finish. Then write your own one-page workshop safety code in your own words, covering blade sharpness, cutting direction, the cutting guide and surface, fumes and dust, and first aid — the rules you will actually follow at the desk.

Check your understanding

Self-assessment

1. For workshop safety, a sharp blade is —

2. 'Perspex' is —

3. The premium fine-grained modelling wood that holds crisp detail is —

In a nutshell

Recap

Material choice is a design decision — boards (foamboard, sunboard, mount and greyboard), wood (soft balsa, crisp basswood, MDF bases), plastics (acrylic/Perspex, acetate) and massing media (blue foam, thermocol, plaster).

Match material to scale and model type — cheap foam and card for study/massing; mount board, basswood and acrylic for presentation.

The tool kit: steel rule, self-healing mat, scalpel and snap-off knife, set squares, fine saw, files, tweezers, pin vice, hot-wire cutter.

Knife safety is workshop law: a sharp blade is safer than a blunt one, cut away from the body, cut against steel on a self-healing mat, cap the blade when set down.

Ventilate for fumes, mask for dust, keep first aid within reach — and stop working when tired, when most cuts happen.

The evidence

References & further reading

[1]Megan Werner, Model Making, Princeton Architectural Press, 2011 (the best concise materials and tools catalogue).
[2]Nick Dunn, Architectural Modelmaking, 2nd ed., Laurence King, 2014 (extended materials — foams, timbers, plastics).
[3]Criss B. Mills, Designing with Models, 3rd ed., Wiley, 2011 (tools and safe working method); align with your institution's workshop safety induction.
[4]Rolf Janke, Architectural Models, Praeger, 1978 (classic reference on customary model materials and tools).