I ruined three molds before getting the pressure right. Try using a softer tamper or just your fingertips?

Check how you're sorting dates with the csv module. It doesn't sort by itself; you need to use sorted() on the data after reading it. Make sure your dates are in a format that sorts correctly, like YYYY-MM-DD. Otherwise, you might get unexpected results.

Listen to riley_flores and run the other way. I once bought a timeshare, so I know a bad money choice when I see one.

Is it ever really okay to skip a step like that? Look at what happened to @richardhernandez's buddy, that floor job turned into a huge mess. Moisture tests are not just a suggestion, they stop problems before they start. Skipping any safety check is basically hoping you get lucky, and that's a bad plan. It might take a few extra minutes now, but it saves days of work later.

You solved chatter just with rubber pads? I'm shocked it wasn't the end mill.