Here I continually run the heating routine for a piece with an initial temperature of 70 degrees in a furnace set to 2300 degrees. The temperature scale, expressed vertically, runs from 0-2500 degrees. The bottom of the piece, which sits on a solid hearth through which no heat is transferred, is to the lower right.
The graph is rendered using a shortcut isometric technique which obviates the need for matrix multiplications and perspective transformations.