The history of crafts is long, related to development of basic needs of human society. Through ages craftsmen have released their knowledge from one generation to the next one. These skills were based on traditions of certain nation and comforted with its esthetical, economical and cultural needs. During ages various ways to report, fix and document labour process have been used for different crafts. Five main feature characterizing traditional crafts and their significance in nowadays are described in an article. To fix the labour process, a researcher has to choose one or more the most optimal documenting ways: photos, videos, symbols or craftsman’s description. As the result of practical researches, experience and interviews, the algorithm to renovate a traditional but little known craft is developed. It has been called a “module of lost skills” and developed as six steps system. The first step establishes the reason to renovate the craft – demand or needs to use the certain skills. Demand is determined by the part of society who is interested in a craft and stimulates its development. However the demand not always conforms with a craftsman’s interests and potentialities. The second step – the ways and sources to obtain skills. During this step the available information is achieved. It can be original or the first sample, craftsmen’s evidences, the direct estimation of labour process, documentation, which consists of sketches, pictures, drawings, monochrome or colour photographies, photographies of the labour process, digital pictures, videos, detailed descriptions of the labour process, general descriptions of a subject, texts with pictures, texts with photos, a schematic pictures, symbols of the labour process. The great importance and value has also the experience of other researchers investigating related crafts. New sources of information increase knowledge about the certain crafts. Insufficient and contradictious information complicates investigation process. The third step – the processing of obtained information, tests of the labour processes, empirical researches. Obtained experience gives more stable knowledge and skills. It is also possibility to verify obtained skills. However empirical process is time-consuming. The fourth step – comparison with the first samples. The first samples give more precise results then comparison with craft documentation. If necessary the process can go back to the third step. Difficulties to obtain the first samples and their bad quality or even nonbeing of the first samples often make impossible comparison process. The fifth step – further researches. Experiments during the use process of goods show mistakes of the labour process and technology. The use process of samples gives also new ideas for further researches. It is possibility to test obtained skills. However this process takes a lot of time is not precise and requires involving other persons (to test samples during their use process). The sixth step is summarization of experience and knowledge, publication of obtained materials. It is the final step of the module. Published information raises interest of society, expositions give possibility to combine theoretical knowledge with practical results. During training process knowledge is delivered to the craftsmen of the next generation. As a practical sample of a lost craft, the manufacturing of Latvian leather footwear of 10–14 centuries is described in the article. The information is exhibited in a Craft House in Venspils.