8991
The investigation into the influence of process parameters and different base plate materials ( carbon steel , self-supporting deposition and refractory clay ) was enabled by the in-house developed LPBF machine .
 process parameters, materials, carbon steel, self-supporting, deposition, refractory, clay, LPBF
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:
 process parameters, materials, carbon steel, self-supporting, deposition, refractory, clay, LPBF