Coins in airstill
Hi all, my very first post. Been lurking a while though 
So I spotted a post saying some copper in the still is needed and the coins can also stop super heated bubbles forming and burping the lid off.
I've got some 2p and 1p coins I plan to use. I know the older ones are brass and the new are steel core coated in copper. I guess both are ok for the job?
Do I need to cover the base with them?
Thanks

So I spotted a post saying some copper in the still is needed and the coins can also stop super heated bubbles forming and burping the lid off.
I've got some 2p and 1p coins I plan to use. I know the older ones are brass and the new are steel core coated in copper. I guess both are ok for the job?
Do I need to cover the base with them?
Thanks

