Neo80 Experiments: Scuffed Internal Copper Weight

I wonder if a “copper internal weight” would affect the sound signature?
00:00 No internal weight
00:36 One Copper Sheet Scuffed Internal Weight
01:20 Two Copper Sheet Scuffed Internal Weight
Neo80 with
KNC Keys Tofu switches on
aluminum plate on
gasket dumbbells mount with
no foam and
GMK Earth Tones keycaps with
empty battery cavity and
copper external weight.
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