This is a classical design, with the flared out front plate. The Stroudley A1 Terrier locomotive has the same kind of smokebox shape. That loco was from the same period (1880’s).
I used a piece of steel pipe (160mm diameter) on which the front plate is silver soldered.
The door is a combination of a steel turned disk and a curved steel plate, also silver soldered on. I’ve used the standard dart design for closing the door, because I couldn’t figure out how this worked on the original Württ. T3.
The base of the chimney is formed by fly cutting with a boringhead. This is set to the radius of the smokebox.
After leaving the milling machine, the outer shape was turned in the lathe.
Although a extreme long overhang from the chuck, boring out the chimney was done in this set-up. Easy does it! :-)
In three steps the inner conical shape was turned.
The rotating center in the tail stock is inside the chimney, when the out side was turned. For both operations (in and outside) the cross slide was set to an angle of a few degrees.
Drilling holes for mounting the smokebox on the frame
The smokebox saddle consists of two strips of mild steel
Finishing the hinge by hand
The hinge is made from a steel bar, that was first reduced to thickness of 2 mm in the shaping machine. You’ll see in the photo the 8mm square lumps, that became the eye of the hinge. This job has been done by filing.
The complete assembly.