9
Now the other ribs R4 to R13, as well as the prepared finishing rib R14, can be put into the assembly aid
with the ribbed feet. The distance between the ribbed feet is chosen so that each rib has a unique position.
Despite CNC production, due to the rear-sweeping of the wings, the manual machining of the ribs on the
lower and upper side in the area of the wing spar can not be avoided. Here, the ribs have to be worked out
with a file (flat side towards the rib). For better handling and a risk of breakage, we recommend pressing the
ribs against a Lego stone, wooden strip, etc., and then performing the file cutting.
