iPad Pro 12.9" holder

I wanted to make my iPad Pro 12.9" hanger to watch movies while in bed. When I saw the prices I wanted to make it better and cheaper.The necessary is to buy tv hanger from the link below:https://www.manomano.it/p/supporto-tv-staffa-braccio-lcd-porta-tv-da-parete-da-10-a-32-hdl-118-8057014?from=my_orders or any other: HDL-118 TV wall mount which has extra metal arms necessary is to disassemble the mount and use the bolts and screws. also it is necessary to use 8 zipties to connect metal arms with 3dprinted parts.