About this 3D model

My last version which i have print it in PLA fail to survive from my baby girl ......... then i make this version and hope it can be tougher. Besides an other improvement is that i make the edges & corners round, in order to prevent my baby girl getting hurt by the sharpe edge [Last Version]https://www.myminifactory.com/object/3d-print-bookshelf-corners-118024