You also state a so called test about alu versus resin based material , there is no real explanation how the test was performed , was the alu material braced and the resin not ( the S 5 is braced i assume ) , how big in size and thick were the materials ?
If alu was such a non resonant material why is it then nessesary to brace it to the extreme like in the q series , maybe it is bettter to use a material which doesnt ring much to start with .
It is braced with stainless steel or steel which is not a non resonant material , it is strong/non flexible however
Ever rubbed a knockle to aluminium or alu alloy say a 500 mm by 1000 mm by 25 mm thick plate and did the same with for example HPL {paper drenched in resin } i did
If alu was such a non resonant material why is it then nessesary to brace it to the extreme like in the q series , maybe it is bettter to use a material which doesnt ring much to start with .
It is braced with stainless steel or steel which is not a non resonant material , it is strong/non flexible however
Ever rubbed a knockle to aluminium or alu alloy say a 500 mm by 1000 mm by 25 mm thick plate and did the same with for example HPL {paper drenched in resin } i did
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