I have spent most of the day drilling holes to remove the centre piece of marble from the second of the two rings. This is very slow work and I am glad to have almost reached the end. Tomorrow will need a further hour of drilling before the plug can be lifted out. I could have sped up the process by cutting away more of the centre block but I wanted to keep as much of it in tact in order that it may be a useful size for some future project. I hear from the gallery in London that they have sold the 13th sculpture of the exhibition. Over 70% sold. I am delighted. So are they.