Making the mould part III

I made the central layer of the mould today and started to glue on the spacers. The central layer only touches the blocks. It would not be possible to remove the mould from the inside after the linings have been glued to the ribs otherwise. In order to align the different layers accurately, I had already drilled holes in all the plates before routing them to match. The spacers also have holes drilled through them to align the plates well. In addition I checked all the surfaces where the blocks will be glued that they indeed match. Which they did.