The library I used to work in called them "magic mending" for some reason.
It is time & labor intensive.  You have to have glue, and that's messy.
They don't stand up well on the shelf, at least for slick papered
periodicals that tend to flop.  I would avoid it.  I think the labor
invested plus glue, covers, brushes, etc. might be better-spent on buying
boxes or sending them to the bindery.  Just my opinion.

********************************************************************
Carol Morse                                    Phone: 509:527-2684
Serials Librarian                              Fax::  509) 527-2001
Walla Walla College Library            Email:  morsca@wwc.edu
204 S. College Ave.
College Place, WA  99324

Grant us strength for the journey and wisdom to know the way.
********************************************************************