After making some Urth blocks today, I thought about how this process could be a bit easier. Since we only have one block type now, I'm wondering if we could have "hoppers" as add-ons to the machines. We'd put our ingredients in the hoppers, and then we'd just have to push a button to make a block or fuel cell. Each hopper could contain up to 16 stacks of the ingredient. We could have an additional "finished goods" hopper so that all we'd have to do is fill up the ingredient hoppers, push a button, then come back later to collect, like we do with our stills.