Good Afternoon, I write to get advice on using the "shell" function. I state that I am not an expert user of Solidworks, I dedicate myself occasionally to pure entertainment. I would like to be able to empty the fuselage section of a model aircraft I designed (see attachment), obtaining a thickness of about 0.8 mm. I tried several times without success (probably due to the complex form). Thanks in advance to those who decide to come to my aid.