I have not experienced any ‘heat’ related issues, but I will say that I do not put my lunch bag in the left case as it can get warm.
It took about two hours work from a scratch idea, minus the overnight paint dry. Here’s what I used:
1. Galvanized sheet metal
2. Paper and pencil for drawing up the template
3. Spray paint. For obvious reasons I did not go with black; what was lying around and durable was a can of Rustoleum Hammer Coat Silver.
4. Tools: Tin snips, metal hole puncher, sandpaper to take down the razor edges.
The shield is fitted under the hinge screws (re-added the Locktite from RR item #476) and opposite side tabs are screwed into the rubber bumper.
I’m guessing that the shield is defensive layer one and will cause the heat to roll away from the case. There is a bit of an air gap between the shield and the case which should aid the effect.
I leave it to better hands to craft a MKII with a better curve and such.
Best part is it cost me $0.00, #482 is off the list and if for some reason it fails to serve the purpose, I can remove it easily.

