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The methodology here used has made possible the preparation of composite , filament and 3D-printed objects with no degradation of the permanent magnet properties .
 methodology, composite, filament, 3D-printed, degradation, permanent magnet properties
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 methodology, composite, filament, 3D-printed, degradation, permanent magnet properties