Modified the lower holder piece to fit Jordi Vela's ipad holder mount via 2 cable ties. Legs bow a little with 4 perimeters and 20% infil so up to 50% infil and perhaps slightly higher perimeter count.
Printed in Prusament PTEG no supports required. Same connectors as the original (sans the rubber band):
4 x M3x18mm or 20mm screws
3 x M3 nuts
1 x M3 wing nut
The author remixed this model.