Industrial chemistry & chemical engineering
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Small-scale Soapmaking
Provides instructions on small-scale soap production methods. A practical introduction, with many illustrations, based on the author's experiences in Ghana.
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Low Cost Wooden Duplicator
Construction details for a stencil duplicator that can be built using simple woodworking tools, and is easy to use and maintain. Includes templates for use in construction.
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Small-scale Production of Cementitious Materials
Cement, or at least some form of cementing material, is an essential ingredient of virtually every type of construction. Two alternative approaches to large scale factory production are considered: firstly, the manufacture of Portland cement, or material of comparable quality, in much smaller kilns,...