The first cut is the.... most productive?

Our new lawn had its first hair cut today. Jay got the new lawn mower out after a week of intermittent rain which stopped play with my new toy. 
I had no idea how much grass a large lawn like this produces! I bought the biggest thermoking composter as soon as we got here, so plenty of space, right? Right?
Wrong.
One cut and the TK is three quarters full!

I got busy taking it back out, layering it with cardboard in a dalek, and had soon filled one and a half of them, and still a third full in the TK! And the grass was already slightly warmer than body temperature in the ZTK after just four hours. Very impressed.

Chances are that I'll need another TK, what do you think? LOL