They're too far apart in grot levels to start with, and they shouldn't be taking off more material. However they may make more if a grey sludge as it's smaller particles. should never more than double the grit level.
And starting at 800 is only ok, if knifed are well maintained. If it's a poor edge more like 320 and repairing a properly damaged edge 120 or 220 depending how bad it is.
	
		
			
		
		
	
				
			And starting at 800 is only ok, if knifed are well maintained. If it's a poor edge more like 320 and repairing a properly damaged edge 120 or 220 depending how bad it is.
			
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		 . I've only done a couple of knives so far, and even though my "eye" hadn't been too far off on my previous freehand sharpens, it took a bit of work to get the angle back to 20degrees.
. I've only done a couple of knives so far, and even though my "eye" hadn't been too far off on my previous freehand sharpens, it took a bit of work to get the angle back to 20degrees. 
 
		 
 
		 
	