@sam I've tried several of these manuals, and as helpful as they are, none of them separate the hinge from the 3DS XL, what I need to do to replace the top-part of the lower half of the case, where it has split from the notification (StreetPass/SpotPass) light to the Wifi connection light, and every time the 3DS XL is closed, the crack gets bigger.

Is there a similar guide for the 3DS XL? I am replacing the middle part of the case after the hinge broke, and it seems that I have to pull the whole thing to pieces just to replace it...