Joined surface instead of solid

 From:  OSTexo
6497.20 
Hello Andrei,

That file is not simple, you're misinterpreting the model and it's intended use. It's pretty obvious from his sig that the person who posted the file is in the mold design business. It also stands to reason that someone who is adding draft to parts and naming files thermoform in another thread is using the file for some sort of mold operation as well. Formulate a plan based upon the intended use of the model, trying to do simple all of the time is not possible and in some cases will end up causing more problems later in the process.