Recommendations:

• I would recommend 100% infill on the display for a solid grip on the shelf or table. A 10% infill and 2mm wall thickness is more than enough for the clamp screw.

• Don't change the angle of the models, they are placed that way to optimize the part strength.

• This model will need supports, just make sure the supports doesn't destroy the thread.

• A piece of electrical tape on the "ceiling" of the clamp will increase the grip. (see pictures)

• Don't tighten the clamp screw too much. It might crack the print and won't improve the grip, most likely the other way round.

• The clamp fits tables or sheves between 12.5 mm and 20 mm thick, I would not recommend to rescale the model. Nofify me if it's too big/small for your shelf and I might modify the model.