Two of my khukuris are users (a bonecutter and a cak) and i use stones to touch up the edge on them. I finish them off w/ a leather belt.
Monk3yfist you'll be fine doing it the way you are. I've never met or known anyone who was able to get a perfectly flat edge bevel on one side of a blade, let alone on both sides sharpening strictly by hand with a hand held whetstone, not even a top notch machinist.
Over time the average person will eventually *rock* a convexed edge on their knife or any other edged tool just out of the necessity of keeping it sharp.
Years ago when I was a kid and just starting out learning how to sharpen a knife, hatchet, or axe it was mainly from watching one of my elder kin. No one worried about what kind of an angle was going to be on the edge, all they wanted was simply to have a *sharp* tool that would cut properly.
Also the average person didn't worry about keeping a perfectly flat face on their whetstone('s.)
My grandpa's old whetstone was worn and rounded off horribly on the one corner he sharpened his pocketknife on. When he got ready to sharpen his knife he'd get his old whetstone off the top of the cabinet in the kitchen and set down at the big old round kitchen table where he would spit on the stone and then using a circular motion he'd start sharpening. When he got one blade to where he was happy with it he'd close it, open another one and proceed to sharpen that one until he had sharpened all the blades. I wouldn't say that was the right way to do it now but it was the only way he knew. I never saw him shave with a straight razor so I don't know how he sharpened them, hopefully not the same way he sharpened his pocketknife.
I guarantee you they were all sharp enough to shave arm or leg hair or cut an unwary boy's finger if he wasn't watching and being careful on those rare days when his grandpa would let him whittle something under his watchful eye, fond memories those days.
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