Pre-plan buildings with three-dimensional paper mock-ups. The O Scale Planning Packet contains full-sized drawings of wall sections. To use, make photocopies of drawings, cut out wall section copies and arrange into paper walls. Tape walls on cardboard. Cut out cardboard and tape together. Modify mock-up until satisfied, then purchase the required wall sections to construct your buildings. To purchase, click Add To Cart or Click here to open and/or download a FREE detailed PDF file that you can save and/or print. You must have Adobe Acrobat Reader installed to view, print and/or save this file.