Are stress cracks like this really a big deal?

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I always hear mixed opinions about stress cracks. When is it important to repair would y'all say?
 

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I always hear mixed opinions about stress cracks. When is it important to repair would y'all say?
If you will take a 1/16th drill bit and drill hole where crack stops, It will do just that,stop the crack!! Then paint the crack with the glue shown below,e-bay good to find glue!!!
 

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I just used superglue on mine, it's held up fine - that being said it has not been my primary flyer for a couple years now :)
 
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There was mention of this on the Mavic forum also but I've never experienced any of these cracks... but then, I've never owned a Phantom either so...
 
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Key word. Trick.
Some folks aren’t good at tricks. I’ve seen it with my own eyes watching people with drills in their hands.
Wrap a piece of electrical tape about 1/8”-1/4” from end of bit. Use that as a stop.
If it’s too difficult to wrap the tape around such a thin bit you can at least use a sharpie to mark the spot you want to stop and just be very careful you don’t go past that Mark
 
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They use that same drilling trick on real airplanes. I fly single-engine small planes, and small growing cracks in the skin are often stopped with a tiny hole.
 

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