Edge chipping and rolling

O

Owenbert

Joined
Sep 25, 2017
Messages
3
first time posting to the forum. Recently sharpened 2 of my work edc mini grip (154cm) and delica (vg10) on my kme to 1500 then stropped with green then red compound. Edges are micro chipping and rolling over(can feel a burr and edge glints in light). I don’t abuse these blades not even close cut cardboard, sharpen pencils,
open bags of thin set and grout, and everyday task. Sharpening at about 30-35 degree inclusive(don’t use my angle guide for these blades). Is this just the normal nature of this steel? Should I be using a steeper angle? Thanks guys
 
Maybe grout particles are banging the edge when you open the bags?
Maybe they aren't being deburred properly and you using a wispy edge that's just a straighten out burr, wiry edge.

???

Could be a million things

Your going to have other people jump in here and say it's the heat treatment this, or that the blades we're burnt on the grinders at the factory. Or that you need Tougher steel like S7 or 3v blah, blah, blah

Just listen and do this

sharpen to a burr both sides on your 1500 and 30 inclusive or 15 per side but then deburr with a 40 inclusive EXTREMELY light pressure. Don't crush your edge. Move to the green. I'd skip the red that's some type of softer jewelry rouge. Heck even the green could have lower abrasive content then other brands so I'd stick to the good stuff.

But yeah, try that.

The Mircobevel.
 
I agree. I do 30 and then a microbevel at 40 with a light touch for my Spydeco VG10 and have no problems.
 
DeadboxHero said:
Maybe grout particles are banging the edge when you open the bags?
Maybe they aren't being deburred properly and you using a wispy edge that's just a straighten out burr, wiry edge.

???

Could be a million things

Your going to have other people jump in here and say it's the heat treatment this, or that the blades we're burnt on the grinders at the factory. Or that you need Tougher steel like S7 or 3v blah, blah, blah

Just listen and do this

sharpen to a burr both sides on your 1500 and 30 inclusive or 15 per side but then deburr with a 40 inclusive EXTREMELY light pressure. Don't crush your edge. Move to the green. I'd skip the red that's some type of softer jewelry rouge. Heck even the green could have lower abrasive content then other brands so I'd stick to the good stuff.

But yeah, try that.

The Mircobevel.
Click to expand...
DeadboxHero said:
Maybe grout particles are banging the edge when you open the bags?
Maybe they aren't being deburred properly and you using a wispy edge that's just a straighten out burr, wiry edge.

???

Could be a million things

Your going to have other people jump in here and say it's the heat treatment this, or that the blades we're burnt on the grinders at the factory. Or that you need Tougher steel like S7 or 3v blah, blah, blah

Just listen and do this

sharpen to a burr both sides on your 1500 and 30 inclusive or 15 per side but then deburr with a 40 inclusive EXTREMELY light pressure. Don't crush your edge. Move to the green. I'd skip the red that's some type of softer jewelry rouge. Heck even the green could have lower abrasive content then other brands so I'd stick to the good stuff.

But yeah, try that.

The Mircobevel.
Click to expand...
Great answer, I agree completely but will add if he is hand sharpening and always forming his burr same side (strong hand) and bevel is off blade will roll as he describes
 
I've used 154CM a ton, even opened bags of concrete and pea gravel, never had an issue.

Make sure you really are deburring your edge upon final sharpening. It's not uncommon for a burr to flop back and forth if you're using too much pressure, always feel both sides when you think you're done sharpening.
 
How much weight are you using on the blade with the stone? Light, moderate or heavy? What's the stone grit progression your doing? Are you using a sharpie on the edge? Are you using a strop?
 
Try to make sure that you are deburring the edge between progressions. If that doesn't work I would consider adding a microbevel to strength the edge.
 
Good suggestions in here. This is definitely not normal, and I would definitely try a micro bevel. Get a loupe to make sure you aren’t leaving any burrs.
 
Has anyone actually dealt with a bad heat treated blade from a large manufacturer (Spyderco, Benchmade, Buck, Kershaw/ZT, etc?
 
As an added note to what blues bender said up above:

When I am sharpening and want to test the edge for a burr I cut a piece of paper. I cut diagonally down to the left, and diagonally down to the right. Sometimes the knife feels like it is cutting better one way than the other. That lets me knoe there is still burr left.
 
I'm with the group thinking there's some bur left over, maybe a wire edge that's pulling out after some use. Wire edges can be tricky because it feels sharp initially but quickly dulls, folds, or pulls off and leaves spots that aren't sharp.
 
Normally, you get either chipping (lack of toughness) or rolling (lack of strength). As numerous people have mentioned, you may have left a burr after sharpening that can show both of those characteristics. But if not, you're dealing with a poor heat treat.
 
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