We have started to build the keelbox. The keel will slide up and down this box, so precision and parallelism of the sides is very very important. To make sure we get parallel sides of the right dimensions we have made a template in steel for both the outside of the keel and the inside of the keel box. They were finished this morning, and the fit was nice and tight. So tight in fact that they had to pe pulled appart by pulleys, which in the process almost dislocated the staircase to our office!