Advice on how to remove alternator pulley

I can’t get a good enough grip on the pulley to loosen the nut, whats a good way to remove the alternator pulley?

Impact gun

strap wrench if you care bout the alternator. if you don’t care about the alternator just shove a screwdriver between the fins down into the housing

yeh what he said

Do what MX-5 said if you’re removing it in the car, get a strap wrench on the pulley.

I would recommend pulling the alternator out (will it slip out from the bottom?) if you haven’t already and hit it with the impact like Shady and German suggest.

I ended up making a make shift holder with the old belt and a pair of vice grips. I don’t think my compressor was powerful enough lol