Done it a couple of times ,but not worth the little bit of time I have to spare. New blade $15,........ time spent making bows and shooting them.............Priceless!
The blades I get are very well made for a reasonable price so I can't complain. If I had to rely on the big box stores or specialty woodworking stores, I'd loose my mind. I get them from a place called Busy Bee here in town ,but there are usually blade sharpening places as well in the bigger towns and cities that will make the blades up on site to your length. These are the guys to get to know. They can tell you anything you need to know about steel/carbide quality tooth paterns etc., etc., and what your best bang for the buck is. They also know all of the other guys in town that work wood and what they are up to (including sawmills). Good resource all around!
