In the 60’s or 70,s ? there were a series of booklets produced for school teachers
called STEP by STEP METALWORK anyone remember them ? I have a poor
copy of No3 by Kenneth Wells. This covers the construction of a spirit fired boiler
and single cylinder oscillating plant and also its conversion into a traction engine
very similar in size and design to Mamod.
The booklet consists of over 90 A4 pages full of plans,photographs and information
for the student and teacher.I would imagine that this issue was aimed at the 11+
age group.