by RC Al » Tue Apr 27, 2021 9:58 pm
Copper is good, If your going to cut your own, rough them up and make them thinner than the diameter, you want as many edges as possible.
I use scoria currently, seems to work just fine
Long term storage in copper isnt a great idea with the potential for excess copper to leech in, stainless is a much better opton there and generally cheaper.