Question: mcreator how to make slabs?
Answer: Extract the . jar file for Minecraft 1.12. ...  Go to the files. You will find a model folder. ( NOT THE MODELS FOLDER IN THE TEXTURE FOLDER) Use search to find slab.json in MCreator. ( cause others cannot have added textures) Use the model with textures in MCreator. Launch to check it if it works. ...  Enjoy or not!