Digital Modelmaking by Helen Lansdown

Author:Helen Lansdown
Language: eng
Format: epub
ISBN: 9781785005862
Publisher: Crowood

The humanoid bust made by Rebecca Smyth. BOB THORN

INTRODUCTION

Becca worked for Bob Thorne at his prop shop, Bob’s Bits, during her free time while studying for a degree. Bob supplies models to film-makers, and during her time working with him she noticed that he had numerous requests for robotic-looking humanoid models. She started by making him some robotic arms, which gave her the idea for her final- year project. Bob agreed to sponsor a robotic humanoid bust on the condition that when finished, he could keep it for his prop shop. Becca started learning 3D modelling for the first time during this project and she went from a complete novice to the point where she could draw and 3D print the vertebrae in this model.

APPROACH

Numerous materials and different processes were used to build this model, including 3D modelling, 3D printing, moulding, casting, vacuum-forming, hand carving and welding.

PROCESS

Making the face involved lifecasting, creating a fibreglass mould, casting in silicone, painting and hair punching. The vertebrae were 3D printed in SLA, moulded and cast in fast-cast resin. The sternum, rib cage and collarbones were made from steel, then welded and bent to shape using oxyacetylene. The skull was vacuum formed using a sheet of laser-etched extruded acrylic; CorelDRAW was used to draw the hexagon pattern. Extruded acrylic is softer than cast acrylic and is an excellent material for vacuum-forming. The brain was carved from lightweight polyurethane modelling board and attached to the fibreglass core. The circuit board, wires, cables and ears are all components provided by Bob’s Bits.

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