The new boiler for Welsh Pony, part-assembled and tack-welded, is currently in the Welding Shop at Boston Lodge, waiting for the insurance company's boiler inspector to approve the work that has been done so far, and for him to authorise the FR's coded welder to finish-weld the seams. The steel inner firebox and foundation ring are in the foreground, The brass bezel is an original part from the 1890s, and the chalk circles on the backhead show where the pop-marks for drilling stay holes are located.