Aluminum is highly heat-conductive.? Steel might have been a better choice.? It's denser, but a thinner wall could be used, so it might come out in the wash.
What's really impressive is when someone makes one of these out of natural materials.? I don't have a video, but I recall reading about it somewhere.
Bruce NJ
On Tue, Jan 8, 2019 at 7:28 AM Pete McLaughlin via Groups.Io <pete_mclaughlin_93555=[email protected]> wrote: