8606
Tensile , compressive and torsion tests were executed on coupons developed in a traditional FFF printer , as well as a customized , 6-axis robotic printer necessary to produce specimens in out of ordinary orientations .
 Tensile, torsion tests, FFF, as, as, printer, orientations
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:
 Tensile, torsion tests, FFF, as, as, printer, orientations