Now I refitted the spindle into the headstock (it took a couple of attempts to do this without scratching the carbon coating on the journal) and locked everything down.

Now all that is needed is to seal everything with fire-cement. Now i don't know if the proper putty, Babbit-rite, is firmer than the fire-cement I got from B&Q but I just couldn't find a way to stop it getting into the bearing. Eventually i decided to create a 'shield' from ally foil folded 3 times and cut into a ring...



and then cemented up. Same for the rear of the bearing...



and finally we are ready to pour metal, once the fire-cement has dried overnight