In 2007 I had a small part in the construction of Antony Gormley's 'Blind Light' installation at the Hayward Gallery.

The piece consisted of a large glass box containing mist generators and bright lights, making it impossible to see further than a few inches once inside. It was quite an eerie feeling slowly moving around, not knowing if there was someone right beside you.

I helped with the general construction of the area around the suspended ceiling truss, and the metalwork that held the glass in place.

Fans and ducting were installed in the ceiling, in case the mist needed to be cleared in an emergency.

One of my carefully made mitre corners in the floor channel that holds the glass.

All of the metalwork had to be made very accurately because of the inflexibility of the glass panels.

If you look carefully at the photo above, you can see some peculiar marks on the glass.

Every cleaning product in the known universe was tried to scrub them off, but the conclusion was
that they must have been formed while the glass panels were being handled during manufacture.

They were very subtle, and only noticeable when the condensation formed on the glass.

I had nothing to do with the construction of the other sculptures, but it was interesting watching their assembly

Enabling the process that led to the situation below, however, must surely be Gormley's proudest achievement: