Turning a deep tapered hole using step boring method

The air oil separator has a cyclone which has a tapered hole form.
Turning this taper using the top slide only would become a real ordeal.
I present a method to remove the bulk of the material by step turning.

In this video I am using:
- Weiler Matador SV (1972) Lathe

Chapters:
00:00 Intro
02:12 Facing and drilling a 20 millimetre hole through the workpiece
12:26 Boring a recess for an internal M60/1 thread
17:27 Explaining the step boring method for taper boring
22:36 Boring the steps for the taper
27:47 Setting up the lathe for finishing the taper
32:03 Finishing the taper
40:15 Single point threading a M60/1 internal thread
44:00 Finishging the other end of the workpiece
52:23 Conclusion and Bye

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