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Consequently , the manufactured components often contain inherent weaknesses in the z-axis due to the relatively weak thermal fusion bonding that occurs between individual layers , as well as poor surface finish in shallow sloped contours .
 manufactured, components, z-axis, fusion bonding, as, as, surface finish, contours
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:
 manufactured, components, z-axis, fusion bonding, as, as, surface finish, contours