Quote from Metasponge64
That doesnt make sense at all. That doesn't make as much sense as punching trees gives you wood. You can't "Push" a liquid.
Quote from Itssnowing
You can block water and lava already. I know it's not moving it, but for a volcano, you could just have blocks slide out of the way...
Quote from Awesomeslayerg
I tried that it did not work...
Maybe not the actual source block itself, but I think pistons should be able to move dispensers, letting you trigger the release of liquids over a distance. you could make an automated flying cobble-gen-bridge-builder machine!