Below are links to PDF documents that will be useful when setting up to produce filters. You can also learn a lot by visiting the informative website of Filtron, a well-established filter factory in Jinotepe, Nicaragua.

English

1. Best Practice Recommendations for Local Manufacturing of Ceramic Pot Filters for Household Water Treatment, June 2011: extensive review of all aspects of production (186 pages)
2. Building the Mani Kiln: detailed and illustrated instructions for building a kiln to fire ceramic water filters (20 pages)
3. Plans for a Filter Press: detailed drawings of a “scissors” press used in filter making (7 pages)
4. Video on how to make a Filter Press (youtube):