For your 36 inch long item, you are going to need to split the design into four parts and feed it through four times, (I’d space the breaks at nine inches apart inside the design, then they will be uniform). You can use something like the templates below to align the cuts inside the machine if you want…it might be a little bit easier to visualize what’s going on:
Read this first and then read the demo bullet points here.
You are going to have one heck of a time keeping the material flat against the bed for something 36 inches long - make sure you support it on both sides of the machine and use the little Honeycomb Pins on it to keep it perfectly flat while you are cutting a section…those things are the 
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