I’m preparing a piece of video for the performance on thursday evening. Every ten minutes I film for two. However hard I try, I always end up producing some Heath Robinson setup for filming: bits of cardboard precariously balance to block out reflections! A bit embarrassing, since the gallery is right next to the photography department here at the University of Gloucestershire with its professional studios. Oh well! I have no idea how long it is going to take for this piece of chalk to dissolve away, but in the meantime the gallery is nicely filling up with the smell of vinegar.