A simplified, printer-friendly outline version is here scaled to 1 : 87 (HO) and sized to A4. Red lines are 0.1 pt thick. Some laser cutting shops may be able to cut this form out of a piece of paper, styrene or acryl.
If your hands and eyes are in good condition, you will able to do it with a cutter on the kitchen table. I will try it this evening ;-).
The trusses 2 to 6 are similar, but they have only simple diagonal girders and no x-girder. This drawings will follow.