Summary

Clips to the Ipad with minimal overhang, base screws to table.
This design is provided as is, use at your own your own risk.

Slightly larger TestnutB added for those who find the original nut too tight.

Instructions

Print screws mostly solid and test before use. Your printer needs good filament bonding for the bolts to be strong enough.
Print two of the Screw, Nut and Ipad Arm.
I used tape to make stop the nuts turning when moving the arms and to make the motions stiff enough to stop the Ipad from moving during use.
Slightly larger TestnutB added for those who find the original nut too tight.
This design is provided as is, use at your own your own risk.

Ipad3 stand