3 x more sturdy?
4mm vs 2.5mm
I’m not sure that maths-out…
You read the terms & conditions in fine print too, don’t ya? 
No. I focus my efforts on analyzing important stuff like cell phone stand sturdiness claims.
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It’s probably cromulent. Moment of inertia is:
I = bh^3 /12
Make the sheet metal thicker (h) and it will significantly increase the resistance to bending. It’s a cube term, so going from 2.5mm to 4mm does increase the stiffness by a factor of 4.1.
Ah, cromulent. Of course…
A noble spirit embiggens the smallest man.
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Cromulent.
//off to google
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Apparently, it’s a Simpsons thing. Not yet a real word.
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Doh!
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