Which Gaggia? I never heat treated any of the ones I messed with.
Classic. Gonna stick it in a bench vise at some point but don't want to mangle it completely. It's old, never been off before and by hand will not budge so I'm assuming it's stuck on.
More force :)
I'd probably try hot water first.
@Howard started
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Which Gaggia? I never heat treated any of the ones I messed with.