great idea
are you just shaping with the angle grinder? any particular type of disc?
i have access to this sort of thing... might do it myself...
I cut it to length with my steel chop saw.
Was hoping to do a bit with my plasma but it’s a bit thick for that.
The inside curve under the horn is a bunch of holes I drilled then cut between them with the plasma, worked a charm.
The horn I shaped with my 100mm and 115mm grinders just using 1mm thick cutting discs.
I’ve used about 20-25 x 100mm discs and 3 x 115mm discs. (More 100mm discs because the 115 is cordless, so I just used it where it was to deep for the 100mm to get, Plus the slightest twist shatters the thin discs)
I cut a bit to much off one side (I didn’t put enough thought into it before going into rip-tear mode so I just built it back up with weld and it came out fine.
Just shaped it with a regular 100mm grinding disc, then I’ll pretty it up with flap discs.
I won’t bother trying to grind the top flat and will instead weld a big ole hunk of flat steel onto it...
Bill