||This page demonstrates the use of a bug and/or glitch to make a contraption.
Bugs of this nature may be fixed at any time without warning: when this happens, the contraption will cease to work.
Use at your own risk.
It is important to note that this method only works with blocks that can be moved by pistons, and there can still be items loss from items getting stuck and then blown up.
Blocks cannot just exist outside the block grid. However pistons appear to do this all the time. Actually, the blocks to be pushed are deleted, then moving piston - are placed at the destination, then play the animation of blocks moving to give a sense of blocks moving.
This block has some interesting properties. It has a blast resistance of 0, and can't be broken by tools, but it can be broken by explosion, after that it will drop the same things the block it replaces would drop if broken by explosions, however with a 100% chance. Thus, blowing up a moving block greatly increase efficiency.