I purchase my blades on ebay. I buy Morse 10 tpi bi metal blades, its about $50 for two blades so not bad. I cut a lot of thick damascus so 10 tpi is probably not what your looking for. I get my blades from this guy. http://myworld.ebay.com/buckeye445/; he sells 10, 14, and 18 tpi.
If I...