Research on improving the accuracy of FDM 3D printing process by using a new designed calibrating partRăzvan Păcurar, Valentin Buzilă, Ancuţa Păcurar, Eugen Guţiu, Sergiu Dan Stan and Petru BerceMATEC Web Conf., 299 (2019) 01007DOI: https://doi.org/10.1051/matecconf/201929901007