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The above bates model is based on cementing construction, from the looks of it, relies only on chemical adhesive.. dual density outsole.. possible phylon + rubber.. or.. *gulp* PU + rubber.
From my trial and error so far, there is no feasible chemical adhesive that could match the bonding strength of the good ol' vulcanized shoe construction (avg 100kg tear strength, same construction with the standard issue), at least not without additional upper to sole bonding method.
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