Aluminium Milk Churn Boiler

[rkidtech]

Hi Guys,
I have an aluminium 10 gallon milk churn which I'm doing mechanical surgery on and intend to use as a boiler (with 2 electric elements in it) with an all copper valved reflux still.
After reading some of the postings I am starting to rethink again, that maybe it’s not such a good idea. I posed the question before on the forum, as to whether or not to use this combination and I was assured it would be fine (as long as it was just the boiler)
I know from my plumbing days that electrolytic corrosion occurs between copper pipes and steel radiators. The steel radiators end up with sludge in the bottom middle and obviously cold there as well. Paper thin walls and the slightest of touches can give you a leak.
On my set up there will be no physical contact between the aluminium lid and the copper 2” coupling seat. Just a thick cork seal. And stainless steel nuts and bolts with a rubber grommets and rubber washers, over and between the threads of the stainless steel clamp down bolts and through the holes.
I very much doubt that electrolysis can migrate across the steam and alcohol vapour mix as it is exiting into the copper reflux column from the mash header space. Or maybe I’m wrong?
I need some more reassurance again guys
Geoff