I got back to the Europa’s muffler heat shield, that works extremely well and the repair to my frames inspection hole.
The muffler/ shield is now under the tweaking process, lower, lighter and final appearance. Functionally I can put my hand on the cover and not feel any appreciable heat. I used my digital thermometer on it but that picture had extreme glare on the readout.
Then I started installing the plates to enhance the structure around the inspection hole. I decided to add a third plate between the two I had already made but by adding a “plug” to take up the top and bottom plates will spread the load or stress. On aircraft we use a sealant between the layers but it may be overkill in this case .
Gavin, thanks for pointing out my blunder and enlightening that area of stress to me.
Dakazman