Flat work on a sheet of heavy aluminum or copper would work okay on top of a hot plate maybe, so the heat would be evenly transferred.
(Flat work on a sheet of heavy aluminum or copper; would work okay maybe; on top of a hot plate) (the heat; would be evenly transferred; )
Flat work on a sheet of heavy aluminum or copper the heat
would work okay maybe would be evenly transferred
on top of a hot plate