9002
This paper presents an experimental approach to investigate the effects of variation in the process parameter settings , found commonly in most fused deposition modelling printers , on the geometrical properties of the printed parts .
 experimental, variation, process parameter, fused deposition, printers, 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:
 experimental, variation, process parameter, fused deposition, printers, properties