Best material for a diving knife?

The finish makes a big difference too. Regardless of which metal you decide to use, if you mirror polish the blade surface it should help resist corrosion better.
 
The finish makes a big difference too. Regardless of which metal you decide to use, if you mirror polish the blade surface it should help resist corrosion better.

+1 on that. Dont do a satin or bead blast, only a mirror finish.
 
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