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Cutting Plans Out

Im a bit confused. Am I supposed to cut the outside of the black lines or the inside (leaving no black outline on the template)?
For internal cutouts do I cut the outside of the cutout (leaving no black outline on the template ) or just the inside of the cutout? As an example the horizontal stabilizer of the mini scout has a rectanglular cutout for the tail.


Legendary member
I second what has been said I always make a mistake somewhere and guess what the plane still flys unless I didn’t do a crap check before launching :).