I've been working and rewriting Apparatus to get it ready for people to use. It's slow but steady progress.
This morning I made this simple diagram about the moon's tidal influence on the earth. (Attached movie).
I had the idea the night before last. No paper sketch. Yesterday I made a diagram over a half hour. It was more complicated and I didn't like it. Then this morning within a 20 minute chunk I made this one. So I think the workflow time scales are about what I was shooting for.