After seeing some of the cool invisible bookshelves that people had put on here, I finally got round to doing my own. Here are the results!
First of all, in a room where space is already at a premium, the logical step is to build up rather than out and make use of space that is otherwise wasted.
First, I measure the initial pile of books to work out the dimensions and strength of the 2 brackets required. I worked out that the brackets needed to stick out by 6 inches and be around 8 inches tall. I chose a 1 meter length of 5mm thick drawn steel as my brackets as they had excellent strength and wouldn't bent under the weight of the books.
I then had to bend the steel to 90 degree angles at each end for the brackets. I did this by wedging the steel in an unmovable item and bending it. Requires some strength!
I then had to drill the holes to mount the brackets to the wall. I did all this before cutting the brackets as drilling a large piece of steel is easier than fiddly small parts.
I then cut the brackets and mounted them to the wall.
Now comes the tricky part. How to mount the first book without damaging the cover. Well I did have to cut 2 small slits in the cover as shown. The brackets then slide through the slits and under the hard cover of the book.
Once your largest book is in place, stack the rest up!