It Keeps Growing and Growing

This is starting to get a little monotonous, but this expanding foam is really weird. How long does it take this stuff to set?

Last night when I went downstairs, a protuberance had grown out of the explosion.
It looks like a tiny little alien hand.
This morning, there is another growth coming out of the masking tape,
and the little hand has one seriously long and twirly appendage.
Keep checking back for further developments. We're all in this together!