How are Mufflers made?

How are mufflers and resonators made?
Process of the fabrication of our Mufflers and Resonators.
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[@jorgepaolucci3163]

Does anyone know what gun they use to fill the exhaust?

[@sudipdas6195]

I have clear to unerstood the manufacture of muffler... but what's material is filled inside the muffler cylinder ???

[@MarclenChin]

looks like fiberglass

[@minhthanhle8784]

fiberglass injection machine
where do you buy ? show me with. thank.

[@Joombra]

Do you find it?

[@minhthanhle8784]

@@Joombra gun fiberglass, where do you buy? Thank.

[@jimbrown3720]

@@minhthanhle8784 you can buy it at harbor freight in the back by the welders

[@-Flabbergasted-]

L'air vrm belle ta shop

[@pavanw2]

Is it TIG or MIG welding ?

[@TheSuperduke516]

Tig

[@mikescalise8380]

looks like plasma welding

[@keesdevries7061]

Can’t this be automated? So you can do other work at the time. Nice video btw.

[@sofiatgarcia3970]

I think this must be a custom shop.

[@jimbrown3720]

@@sofiatgarcia3970 it is but the guy has a mustache and answers the phone and the email at the same time so he has so much hardships on Mondays

[@swoosh.ninja1137]

Yeah nobody wants to see the finished product