Yes, cooling would definitely be a problem. Perhaps a design like the Menger Sponge could help with that. https://en.m.wikipedia.org/wiki/Menger_sponge https:

Yes, cooling would definitely be a problem. Perhaps a design like the Menger Sponge could help with that. https://en.m.wikipedia.org/wiki/Menger_sponge https://en.m.wikipedia.org/wiki/Menger_sponge