hariline crack

[B1B1]

what can be the reason of this crack,its been only 4 months since i bought this ,its on both side symmetrical.
And how much more can it survive.

 

[s_mair]

can't see the picture

 

[B1B1]

picture

 

[R20190]

Is there a crack on the outside of the frame as well?

 

[B1B1]

Is there a crack on the outside of the frame as well?

no only on inside and also , I applied some fevi quick from inside over it

 

[R20190]

Looks to me like a manufacturing defect, not a lot you can do about it tbh.

If you're lucky, it might just hold out and not get any worse. I've had this before and it was fine for a few more restrings but eventually collapsed while smashing.