two new machines centering around hydration of materials
a Hydrator would be made by putting 4 water-cells around a compressor
it would be used to hydrate coal dust, fill empty cells with water without needing a pump, or nearby water, and to cook foods twice as fast (though injection of heated water)
undoubtably other uses could easily be found
a Dehydrator would be made useing an extractor with 4 empty cells
it could be used to turn hydrated coal dust, back into regular coal dust, you could use it to turn raw meats into jerky, or saplings into sticks, it could also be used to empty filled cells, at the cost of whatever was currently filling them
i realize that neither of these machines are strictly necessary, but they could be useful for undoing mistakes, say, if you hydrate a little too much coal, or ran out of tin but have a bunch of filled cells lying around
they also have potential for use in creating materials for later machines that have yet to be added
