Spray painting giant bells - GIF

[Altair]

Spray painting giant bells(?) Not really sure what these are.




Previously:

Spray painting beverage cans - GIF
Spray painting water bottles - GIF
Sprayprinter robot painting chimney - GIF
Bell ringing test at bell casting foundry - GIF
Striking a Japanese temple bell - GIF

[dadolson]

looks a lot more like Rocket or jet exhausts. You can see mounting fixture at bottom and plumbing on top.
Cloud it be applying spray ceramic before oven??