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In order to find the process settings that will result in permeable walls , test cubes were printed with fins on top with a height of 1 mm and wall thicknesses varying from 150 to 500 The core of the cubes was used to determine bulk porosity .
 process parameter: process settings; manufacturing process: mm; engineering feature: wall thicknesses; machine or equipment: core; machanical property: bulk porosity
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: 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 parameter: process settings; manufacturing process: mm; engineering feature: wall thicknesses; machine or equipment: core; machanical property: bulk porosity