The edge can be machined (sharpened), so that's not a problem. Right now I believe the company cuts the blades out of billet K390, and machines down the edges flat to make the 90-degree edge.
Does anyone have any info, or could point me to some info (Google didn't help) about finding/making extremely hard metals using single crystal alloys?
I'm not necessarily looking for something that's extremely temperature resistant, what I need is something that's very hard (it's for a blade...