id suggest printing on the largest flattest surfaces, you don't need supports for the overhangs but i did use some for certain things

this is designed for m5 bolts ranging from 20mm to 30mm long except for the main bolt that tightens the sliding jaw onto your phone that is designed for quarter 20 lag bolts it will need to be atleast 3 inches for most cell phones but longer the better you can even add a spring to make it slide nicer,

total hardware

3 m5 bolts 3 m5 nuts one 1/4 20 lag bolt one 1/4 20 nut

might be worth slimming down in the future so ill be uploading a v2 later