You are unlikely to be able to create a pdf file for an extended chart, your only option would be to plug your laptop into a large format printer and print directly from FTM. The HPDesignJet 42" printer which I use allowed me to download the Printer Drivers directly from the machine. Once the printer is installed you can define a custom page size 6" longer than your FTM chart. I believe my machine could make a print 50ft long, but 30ft is the maximum I have tried. If you persuade a commercial printer to let you plug in [or put FTM onto their computer] don't let them charge an exorbitant price for the print - remember, 99% of your print is blank space so there is very little ink usage. One tip - remove any border from your chart; it's tricky setting up margins and the border probably won't print properly.