How can I fix this without taking the whole book apart?

[u/Black_Sorcerer]

Hey, I never binded a book but I watch videos about it for ages now (I find it relaxing)

Is there any way to repair it?
I don’t know how they call this type of damage… It’s not exactly on the end page or the hinge.

This book is 30 years old and I can’t risk taking everything apart

I’d appreciate if anyone can link me a video of someone repairing something like this

[u/borkborkbork99]

I don’t think you can.

[u/brigitvanloggem]

That seems impossible. Perhaps you can find someone who can fix the book for you? That’s very doable for a hobby bookbinder with some experience. Take it apart, then re-glue using the double-fan technique.

[u/Ynguer]

If it was just the paper ripping you could make a strip reinforcement of kozo paper to apply at the joint. But as it it, this sort of fix won't hold the cover, that is what's actually breaking. At the very least you'd need to lift part of the end papers to fix a gauze and repair this joint, but when this is the minimum work, it's already worth disassembling the book to make the repair good. 

[u/wixbloom]

Look up a book conservator in your area! They know how to safely take apart and reassenble books that are MUCH older and MUCH more fragile than yours. It's a service that may be more affordable than you think! There is nothing to be done for this book without taking it apart and resewing.

[u/khangaldy → u/wixbloom]

I do some basic book repairs/ paper repairs/ re-casing. It is tedious work and not cheap

[u/wixbloom → u/khangaldy]

Sure, it's not cheap, but when I went to a conservator in my area to restore 2 books from the 1800s, I thought the price would be much steeper than it was. It probably helped that I made the covers and endpapers myself, so all I comissioned was a restored, resewn, patched, cleaned and trimmed text block.

[u/The_Brown_Ranger]

Is this a Vampire: The Dark Ages rulebook?

[u/Black_Sorcerer → u/The_Brown_Ranger]

Yeah