First. you need to cut out a fuselage template.  If you have a cad program, the dxf file includes a fuselage print, with it sectioned out into 8 x10 sheets.  So, you print each sheet individually, and then cut and tape them together.  This is how i do my templates.  Short of that, a piece of posterboard, and alot of patience, and you can draw the template onto the posterboard, and cut it out, or draw it straight onto the coro.  

 
fuse2

Once you have the fuse template cut out, cut 2 pieces of 2 mil coroplast 10x39, with the flutes running in the 39" direction.  
The fuse pieces only need to be 37" long in actuality.  If you only have a 36" wide piece, thats ok, tape a 1" wide section to the front of the fuse pieces with scotch tape, and proceed as it was one piece.  



Tape the template to the coroplast, and mark the fuselage outline on the coroplast then cut it out.

Lay the cut out over the other 10x39" peice, and trace it onto it.  




Now cut the second piece out.  

A note on cutting coroplast.  For round cuts, i use the poultry shears in the bottom of the picture, but, a good pair of scissors will work as well on 2 mil coro.  For straight cuts,  i use a good metal straightedge, and a utility knife.  Always cut so the flutes pull the knife into the straightedge, not away from it.

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