Stuck Trumpet Valve: How to Use Ground Casing Mandrels

This video is about ground casing mandrels and how to use them to fix stuck valves if it is due to damaged casings.
Ground Casing Mandrels can be purchased from Ferree's Tools. Here is the web site:
www.ferreestoolsinc.com/products/n58a_brand?variant=16809779652

Here is the link to several videos that I have in the play list, "How To Repair Stuck Piston Valves"
https://www.youtube.com/playlist?list=PLtJyi3RgtJ2uYEc1UFaS54mTHwrArKZ95

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Видео Stuck Trumpet Valve: How to Use Ground Casing Mandrels канала The Brass and Woodwind Shop