We are so close to the exhibition date of the Amsterdam Light Festival that we will have to keep going, weekend or not! Moving the led aside, and painting the steel with a waterbased PU paint.
Yes, water based. It is best not to use solvents in the artwork. The cover sheets of polycarbonate are mounted in a twist, under tension. After an extended time this tension will start to show through small cracks in the polycarbonate surface. Solvents will speed up this process, so it is better to avoid them. This knowledge is shared to us by our friends at Pyrasied.