Can I make a Wifi router with Arduino ?

Using Arduino Networking, Protocols, and Devices
4

Thanks foe your answers,
I know its hard to make wifi router from scratch,
what I need is to connect 2-3 computer throw wifi that the can talk to each other, no mater of the speed.
I thought about Wifi solution because Rf seems to be much harder to communicate beetwin 2-3 computer simultaneously.

thanks again.