This is a modular design arm, originally design to assist with soldering or just as an extra arm to hold an item.
The design consists of
Two lengths of standard arms, (The short arm is more stable for holding a Phone if filming)
100 mm Arm (80 mm c to c)
200 mm Arm (180 mm c to c)
Duo and quad arm to allow for 2 or 4 arms
Table Clamp for clamping to anything up to 40 mm thick
Tripod base with non rotating roller feet
Phone holder for 55 to 85 mm wide
Peg Holder (requires standard cloths peg spring)
Only 1 part requires supports and that is the Table Clamp Nut (It allows the end to swivel and not move or slip while tightening), all other parts may need to be oriented correctly but can be printed with no supports.
The phone holder is printed upright with a brim.
The Phone Holder is inspired by Modular Mounting System by yyh1002