Edge chipping

[Garonne]

Hello all, i would like your opinion.
I bought a custom knife, didn't find it enough sharpened for my taste and decided to give it a convexed edge 20° per side, i first constated that
it was nearly impossible to get a real burr in the area of the blade along 4 cm, i use the lansky kit, and finish with stropping the blade on a leather charged with compound, i put it under the magnifyng glass and you can see the steel brittle and remove some metal particles with the fingernail.
I repeated the operation twice more with the same result, always chipping along the area. The steel is ATS34, i always sharpen my knives (ATS34, BG42, S30V ...) in the same way and never encounter any problems .
What can i do or try?
Is it possible that you can remove particles with your fingernail ?
Before considering a return, is it possible to have chips on the blade with a wrong quenching?
Thanks for your replies

 

[yuzuha]

I had a SOG mini X42 in BG-42 that looked like the sharpening machine ran out of coolant and burned the edge near the tip (looked slightly blue or yellow compared to the rest of the blade). The edge flaked just as you describe. Could have sent it back but I whipped out the coarse diamond plate and ground away for a few days to get back down to the good steel underneath the burned part. Once I ground down into the good steel, I had no more problems with edge flaking, even at low angles like 10 degrees per side. Don't think I'd do it again, especially with such a wear resistant, gummy steel, but it was a rather informative experience.

 

[Garonne]

I had a SOG mini X42 in BG-42 that looked like the sharpening machine ran out of coolant and burned the edge near the tip (looked slightly blue or yellow compared to the rest of the blade). The edge flaked just as you describe. Could have sent it back but I whipped out the coarse diamond plate and ground away for a few days to get back down to the good steel underneath the burned part. Once I ground down into the good steel, I had no more problems with edge flaking, even at low angles like 10 degrees per side. Don't think I'd do it again, especially with such a wear resistant, gummy steel, but it was a rather informative experience.

The defect is located in the middle of the blade, and i assume that there is not traces of burned edge blue or yellow, likewise the width of the blade in this area is only 14 mm and i don't want to finish with a toothpick

 

[Cliff Stamp]

... is it possible to have chips on the blade with a wrong quenching?

Yes. You can try a softer stone which sometimes works but generally often isn't of much use because the edge won't be very durable even if it does form. Your only real option is as noted to grind into the edge to remove the weakened metal and try again until the edge forms clean. Of course it sounds defective so you are entitled to a replacement.

-Cliff

 

[Garonne]

Thanks all, i don't want to take the risk to remove too much metal this knife i repeat is entirely new, likewise it is a trapper configuration and the other blade is perfect the edge is straight without any defects.
If i knew where the weakened area were located i will try, but in any doubt i prefer forbear, i don't want to get a tendonitis elbow