On a roll today, got busy with some copper wire (reclaimed from some figure of eight "bell wire") and started the pipework on the left firebox side.

For those not familiar with the Crosti variant the two pipes running to the footplate from the valve on the side of the firebox run down to the "blower" that is mounted on the preheater boiler below the footplate.

Must find some thick wire to do the reverser shaft ......