1. Specify an item to craft
2. Load base resources which are listed in the item's tooltip (All intermediates will be figured out automatically)
3. Profit
This version has a maximum depth of 4, but it is easily extendable, just copy-paste and add some wiring between levels.
First pass is the longest as intermediate resources are cached for the future passes.
Assembler in action: https://www.youtube.com/watch?v=0FMAHHLrje0
