Title basically says it all.

This machine works sort of like a factory. It produces items very fast for you to pickup.
It uses the piston duplicating glitch and TNT. Both the Duplicators and the TNT dropping mechanism is completely automatic. It all goes by itself :P

HOW IT WORKS :

There are two platforms on the side of the machine where a piston duplicator that produces 5 rows ( 1 " layer") Of blocks each, and presses it into the " Explosion chamber".
On top of the machine, TNT is dropped 77 blocks from the air with a very precise delay at a very precise spot where there are two layers of self replicating blocks. When the blocks explode, they drop into the water below and follow a stream all the way to the pickup point.

It's a bit more complicated than it sounds to get working, as there are many factors that needs to be 100% correct in order to make it wrong. If something isn't working 110%, it will be very unneffective or not work at all.

This is an original design made by myself and Tormann95. We did not get the idea from anyone.

I might upload a schematic and make a video if people want a tutorial on how to make one, or want to see how it works more in-depth.