Parametric Book Stand with Variables

Great design! Printed nicely in JAYO easy ABS using just a rim.
Tho i confess i never did look into how to adjust the parameters in any parametric model. So i just opened the model in blender and moved the vertices in question to get a 2cm deep book insert. Thanks for sharing your work!

Easy to print and works perfectly. However the tray_depth parameter is confusing as it does not represent the depth of the tray directly but the distance between the center of both edges. Thus you need to take that into account if you want to make a custom stand.