Raucent, BenoîtNolf, HéloïseHéloïseNolfPoudrel, MarineMarinePoudrel2025-05-142025-05-142025-05-142023https://hdl.handle.net/2078.2/32265The growing issue of plastic waste has become a significant concern in today’s society. The primary solution to this problematic is to eliminate unnecessary waste and keep plastic circulating by reusing, repairing and recycling it. This latter includes collecting, sorting, cleaning, shredding, and melting plastic into new objects. This project specifically aims at manufacturing a plastic shredder based on the one that was designed by Precious Plastic, an organization that provides open-source information to enable individuals and communities to set up their own small-scale plastic recycling facilities. However, the current design of the Precious Plastic shredder requires advanced skills and access to specific machines. In this project the shredder is therefore redesigned in order to enhance the accessibility of its manufacturing to a broader audience. As it still requires machines that are not in every household, the design of the machine will be made so that it can be manufactured in a FabLab. This collaboration between Precious Plastic and FabLabs creates a mutually beneficial relationship because FabLabs are located all around the world, enabling a global presence of the Precious Plastic project. As a result of this thesis, a shredder prototype was built to shred take-away plastic containers and PLA. Its performances are lower than the ones of the original shredder as it produces bigger plastic flakes due to the larger thickness of its blades. These latter consisted in the biggest redesign challenge of the project and it was chosen to replace the steel by a hard plastic (POM) and some aluminium reinforcements. However, the objective to increase the manufacturability in FabLab was reached with 92.4% of the parts that were built in a FabLab compared to 0.8% for the initial shredder. The prototype can from now on be used as a test bench for further testings and improvements.ShredderManufacturingPrototypingFabLabPlasticRecyclingtext::thesis::master thesisthesis:39213