After Instruments One, Two and Three (which were made from castings where I machined the patterns) most of Instruments Four to Nine were cut from flat sheet. With Instrument Ten I was interested in the picture plane having greater depth (both on the pictorial surface that takes the splatter but also in its presence), so I made it – and much of the chassis – out of a material that machines well. The material is also a bit soft, so at the junction between the aluminium legs and the Valchromat chassis there is a hardwood insert as a wearing surface and to take the wood screws that (partly) hold the two together, as seen in the top picture during assembly.