Guest Editor - Part 2... Something strange going on

So the last couple of evenings I've been getting home from work to hear strange mechanical sounds coming from the kitchen as I enter the house.

As I get closer they suddenly stop. So today I thought I'd go in extra quietly, armed with my camera...

I finally got a glimpse of the culprit:

And then he saw me:

What's he doing on the letterpress?

I see