seedling pot

Just a minor remix of version 2 of the seedling pot to keep the bottom from falling out and a slightly looser fit for the bottom.

I made one of these, but I probably won't be using it. I'd like to do a total remix of version 2:

1) To speed the printing, the wall thickness needs to be consistent between the walls and corners. As it sits, the printer spends a lot of time filling in the corners because they are a little thicker.
3) Instead of having the holder, I'd like to make blocks of 4 and 9 cells so they are stable enough to not need the holder