The attached picture shows the tubeplate vertically mounted on the pillar drill in a jig and a start made on drilling the 56 pilot holes around the flange of the tubeplate to allow it to be riveted to the smokebox.
The attached picture shows the tubeplate vertically mounted on the pillar drill in a jig and a start made on drilling the 56 pilot holes around the flange of the tubeplate to allow it to be riveted to the smokebox.
Credit: Dick Bellchambers, 30 September 2005