About this 3D model

Will mount onto a 1"x2" board for Wall Shelf Made by 3D Printing Nerd. The Design is (a Remix/Based on) from Thingiverse 2830892 . It is built as part. But One file has all three pieces (V2) for an 11-12 hour "Run & Done" setup. V3 takes abut 7.5 hours to print. It is Simple and has a snug fit to the lumber. Printed on Anet A8. I am new to Designing & 3D Printing. I usually never win contest but here goes nothing.