,When you read a book, you need to hold it because it automatically closes.
Correction:
When you read a book, you no longer need to hold it because it automatically closes.
A 3D printed solutions’ first two prototypes.

As information, I designed it using @SolidWorks. I 3d printed it using @makerbot and @zaxe3d . I used @proto_pasta ‘s Carbon Fiber filament to print.