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  1. Dear all, My name is Pedro Mendonça, Master student from Brazil, in the master program of the School of Industrial Engineering of Federal University of Goias, located in the city of Goiânia (https://ppgep.fct.ufg.br/). My master thesis is based in the principle of analysing the Overall Equipment Effectiveness from 3D printers in a distributed Supply Chain Network, in the context of the project Flexible and Autonomous Manufacturing Systems for Custom-Designed Products (FASTEN - http://www.fastenmanufacturing.eu/). The mission is to develop, demonstrate, validate, and disseminate an integrated and modular framework for efficiently producing custom-designed products. More specifically, FASTEN will demonstrate an open and standardized framework to produce and deliver tailored-designed products, capable to run autonomously and deliver fast and low-cost additive manufactured products. This will be achieved by effectively pairing digital integrated service/products to additive manufacturing processes, on top of tools for decentralizing decision-making and data interchange. So, I would like to ask your help, if possible, in providing information regarding 3D printers and their performance. The main information is regarding the performance logs by the 3D printers, related with: 1) Their PRODUCTIVITY, which is calculated simple measuring the theoretical (expected or average) and real time spent in each printing process (setup, warm-up, coating, cool-down, piece removal and postprocessing - like debasing or material finish). Is fundamental that the piece and the date is identified, in order to have the process in a better comprehensive analysis method. 2) Their AVAILABILITY, which is calculated by the difference of scheduled time for printing and the real time, which is reduced by the non-scheduled stops (like listed in https://ultimaker.com/en/resources/troubleshooting/error-messages). It will be very helpfull if the reasons of non-unscheduled stops are informed for each stop, in order to have a sample of situations that are more common to a more efficient analysis. 3) Their QUALITY, which is calculated by the difference of the number of pieces that were printed and the number of pieces that were discarded. It will be very helpfull if the discarded reason is informed, in order to perform a more detailed analysis. I thank you immensely for your attention and for the information provided. Best regards, Pedro
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