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We demonstrate the possibility of drastic reduction of the separation force ( up to 112 % ) via surface texturing of the permeable window for continuous 3D printing .
 reduction, separation force, surface texturing, 3D printing
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:
 reduction, separation force, surface texturing, 3D printing