how to perform shell (thickness as "1mm")operation as shown in below figure
I'm not sure that I understand you in the correct way.
But if is necessary for You to work with the shell Command, i have a quick and dirty solution.
Should be the Front open?
To get to the weight of 452g, the Insidethickness must be 2.1 mm and the "Thickness.2 must be -12.89mm.