The Backyard Foundry
by B. Terry Aspin

Published by Special Interest Model Books Ltd, Dorset England

Softcover
150 x 210mm
90pp

R.R.P.$19.90

ISBN 978-185486-146-7

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Extract from back cover of book:

At one time, most towns of any size had somewhere a small foundry that would undertake small casting jobs, often more out of interest and good neighbourliness than for commercial gain. Regrettably, those days are no more and the model engineer in many areas must either adapt commercially available castings or send away to a specialist foundry that will undertake small jobs, often at some expense and with some delay. The alternative is to make your own patterns and castings which is, in fact, much easier than you may think.

The Backyard Foundry covers basic principles, materials and techniques, pattern making, moulding boxes, cores and core-boxes, electric, gas and coke furnaces, and includes step-by-step procedures with examples of locomotive cylinders and wheels. Sources of specialised materials and even the design of an outdoor furnace suitable for small-scale commercial work are given. Each stage and subject is covered in detail so that even the inexperienced can undertake casting with confidence.

Although the book is written primarily for the model engineer, anyone wishing to make mouldings or castings will profit from its pages.

Photos: Black & White

Units of Measurement: Imperial

Contents

Acknowledgements

Chapter 1 - Introduction
Basic principles, properties of materials, mould patterns, sand and moisture, making a greensand mould, rapping and dusting.

Chapter 2 - Patterns
Pattern making, quality of patterns, foundry patterns, materials for patterns, drawing, allowance for contraction, draught angle, patterns to accept loose cores, double-sided patterns, oddsides, split patterns and pattern finish.

Chapter 3 - Plate patterns
Basic requirements, home-made moulding box, commercial moulding boxes, concrete moulding boxes, multiple pattern plates, weight of casting, the turn-over plate and the single-sided plate.

Chapter 4 - Cores, core boxes and core making
Sand core, baking or drying out, core sand, core sand mixes, simple beater or mixer, CO2 as hardener, core boxes, core vents, examples of cores and care in making.

Chapter 5 - Casting locomotive cylinders
Light alloy and traditional materials, scaling down drawings, steam passages and allowance for machining.

Chapter 6 - Wheels
Use of pattern plates, identical patterns, spokes, making a pattern, multiple patterns, separate spokes, accurate register, completing the wheel and pouring temperatures.

Chapter 7 - Metal, the furnace and melting
Light alloys from scrap, sources of supply, zinc-based alloys, cuprous alloys, 'biscuit tin' furnace, electric furnace, muffle furnace, gas fired furnaces, gas furnace design, brass and bronze.

Chapter 8 - A solid fuel furnace
Coke as fuel, typical practice, floor-standing furnace, ease of firing, design for a solid fuel furnace, fire lighting, forced draught, portable blower, insulation, operation, measuring scrap iron, rakes and stirrers, high speed blower, protective clothing and safety precautions.

Appendix
Useful addresses of suppliers of foundry materials and accessories