I wanted to assign something (in this case, the first 4 asteroid collectors that I shipped to the platform) from the space platform inventory to the quick toolbar, like I do from my inventory, but clicking something then clicking an empty slot on the toolbar, but ...
That’s right, forgot that it made 2x belts, and it’s not possible to make a single belt (why the hand craft wouldn’t work). I figured I was overlooking something.
I've been playing Factorio for a long time, and have just realized that the time it takes assembling machines to craft an item is slower than the time it takes to craft the same item by hand.
For example, Science Pack 3 takes 12 seconds to craft by hand (which matches the time it says for Science ...