Adjustable inner / outer corner / straight shelf

This shelf ables to ensure that uneven corner doesn't disturb shelfs rigidity. I didn't really wanted to drill my wall with holes, so i designed this shelf to satisfy my requirements! You can always edit this part if you want so or remix freely. To mount it you just need at least 8 stripes of thick (2mm) double sided tape. And 2 M3 screws, inserters/nuts.
upd: added step files.