A tool box assembly provides a tool box that can also be used as a step stool and a bench. The procedural setup of the processing steps permits a modular composition of the calculation process for the simulation of any type of component subjected to physical influences. The webs are positioned one in back of the other and each is unwound onto its own carrier roll, with the spray positioned between the carrier rolls. The back surface of the paper may be coated with a polymeric coating to reduce curl and improve dimensional stability.