Model has a small hinge inside, so it prints in place. I would suggest printing “MiniEasel_MainStand” and “MiniEasel_CardTray” as separate pieces and gluing them together if you want no support. 

“MiniEasel_CardTray_SideRails” has rails on each side, and fits cards with width is less than 2.9 inches, or ~73.5 mm.