Shelf Support for Ikea FJALLBO Shelf

My apartment only allows me to put nail holes into the wall and I needed some shelves to get some more space. So I picked up the Fjallbo from Ikea and started to figure out how to mount it.

So I designed this part so that I could still use nails through the shelfs built in screw holes. In addition to putting nails through the screwholes, I also added small angled nails which prevent the shelf from pulling away from the wall. 

I initially printed and hung these up 7 months ago and they've stayed stable since. I give the occasionally tugs on the shelf to make sure they are still stable and they have been. I've never put anything too heavy (probably no more than 10lbs) on the shelves. I wouldn't trust these with books.

To print, print the attached stl once normally and once mirrored.