I couldn't find a textbook holder to support a 20-pound book. This is used to angle the book for those folks that have to study these large textbooks for days on end. It hopefully gives you an easier angle to view it at and lets you sit more upright.
PLA - No Supports - 10% infill - Cura Cubic Infill - Brim Adhesion
Textbook_Holder.stl | 19.6KB |