Okay kiddo, have you ever seen a picture on a piece of paper before? Well, a 3D fax is kind of like that but instead of just a flat picture, it creates a real-life 3D object.
So, let's say you have a toy airplane and you want to send it to your friend who lives far away. Instead of putting it in the mail and waiting for it to arrive, you can use a 3D fax to send a 3D image of the airplane.
Here's how it works: you place the toy airplane in a special machine that scans it with lasers. The lasers take a bunch of pictures of the airplane from all different angles, kind of like how your mom takes pictures of you at the park.
Then, the machine takes all of those pictures and turns them into a digital file. This file contains all of the information needed to recreate the toy airplane in 3D.
Next, the digital file is sent over to your friend's 3D fax machine. This machine receives the file and reads it, just like how you read a book. But instead of words, the machine reads all of the information about the toy airplane's shape and size.
Finally, the machine takes all of that information and uses it to create a real-life 3D version of the toy airplane. Your friend can then take the airplane out of the 3D fax machine and play with it, just like if you had sent the real toy in the mail!
So, that's basically how a 3D fax works, it's like a super cool way to send 3D objects without having to physically mail them. Pretty awesome, right?