
Originally Posted by
CGCINC
The last blade I used was a brand new bi-metal blade...
http://www.northerntool.com/shop/too...ct_53252_53252
This is the blade I use for All my cutting but I think this Stainless is something different than just 304... It is HARD!!!!
I used a hacksaw to finish about an 1/8" that was left on one disc and it took forever and now That blade is dull
At least this is a one time thing. And you might know it was a freebie for my uncle.....

Northern is not what I would call a quality blade. 
But if your material is hardened at all, you will have problems with any HSS blade. Be aware that a lot of stainless can work harden, too. You can try annealing it to see if that helps. There are also carbide coated blades that buzz through hard materials.
Long arc, short arc, heliarc and in-the-dark!