This thesis researches pipe organ design. Its goal is to create a set of guidelines to help with organ design and show their use through a practical example. In doing so, the value of computer-aided design is explored. The work methods include the collection of data from both a review of the literature and practical work in an organ building workshop. The design of the new organ was done using the SolidWorks software. The result of the research is a systematically sorted bundle of design directions, divided based on the main assemblies of an organ. These are the compressed air supply unit, windchests, organ pipes, console, action, support structure and the casing. Descriptions are given on the operation and role of these assemblies in the organ, and the common building materials used in them. The practical example of organ design is presented through blueprints, created from a 3D model of the newly conceived instrument. The designed organ has six stops and a manual and pedal keyboard with a coupler. It contains 12,245 parts, 300 of which are organ pipes. We have found the main assemblies affect one another during the design process. The leading factors are the stop types, the type of key and stop action, layout of the façade, positioning of the console and windchests and the outer dimensions of the instrument, which is predetermined by the location of instalment. We have confirmed that computer-aided design is generally effective and useful in decreasing the likelihood of design mistakes. It does, however, require a systematic approach and a computer with enough random-access memory.
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