These 2 blades you sold me are fantastic. Much like the new blade that came on this SLR saw back in 2006, but better. You cannot detect saw blade marks. Question, when we send these blades back to you for sharpening, to what percentage do you think they can be sharpened back to new? This is by no means a loaded question. I'm simply just curious. Thank you again for your help with this. Have a great weekend.