As soon as the pour was done, mother nature did some of her own pouring. The finish was ruined. We put giant sheets of plastic over the slab. The crew stayed around and waited out the rain for over an hour. The sun came back out and reworking was done. There was more "cream" than desired, but at least my slab was smooth. The cream turns into a dust-like substance that's almost an 1/8" thick. It comes off even with light scraping once cured.
This is me getting excited and laying out my rooms (roughly) with the 2x4 forms that I pulled off. The control room is on the left. Live/drum room on the right. There's an airlock closest to the camera and an isolation room on the far wall. The entrance is on the wall facing the camera.
Here's another shot.
This slab looks TINY in photos, but is actually quite big.
Neil