Good hacksaws and blades aren't as common as they used to be. I prefer the kind with the wheel up top, and the blades from England/France... I think I ebayed the last batch.
This mild steel we mess with mostly doesn't matter much but working thin-wall 4130 require some properly made blades.
Well i give up. will get pics later. (wasted too much time looking just now) I can't find a representative photograph of either my frames or blades, but i do recall choosing that frame as I'd seen a few that had been in professional service for a long time.
Completely satisfied with that part, chasing down a good source of not-widely-imported blades is the hassle. I used to get the blades at a local independent auto parts house-it's gone, and those are getting TOO scarce as well.