Scratchi Coti?

[mbrossar]

I was freshening up an edge last night on my coti. Very light slurry. Couple of strokes with the slurry stone at most. Seemed like there was a consistent click on my hone stroke. Like there was a foreign particle on the hone. I rubbed the area with my finger. Didn't feel anything but rinsed the hone and the razor off just to be sure. Re-slurried. A few strokes were fine, then it came back.

I admit I'm still learning my coti and honing in general. Is this normal or problematic? I'm honing in my kitchen on a granite counter. The environment is clean, and I can't imagine foreign particles falling from the ceiling.

Thoughts?

 

[Disburden]

IS the stone lapped, have you tried lapping it?

Is the blade chipping, or have you looked at the edge under magnification to see if it's harmed but the honing?

Some coticules can have a sandpaperish feeling in slurry if they cut fast.

 

[twoods]

Mine has that sensation too. I find it very quick with slurry, but I'm still not 100% comfortable with the diluting/sharpening stage.

JF

 

[shavemelater]

The environment is clean, and I can't imagine foreign particles falling from the ceiling.

Your stubbles are throwing sacrifice whiskers at the coticule in hopes that you will not shave them

No really, it sounds like a foreign particle to me. Rinse the coticule - make sure you also rinse the blade too when you rinse the coticule. The particle(s) may be present on either or both

 

[chess1]

As early mentioned. it could be anything.
clean it up lap and test it again. but if you still have same sensation you have got 1 of the lowest grit Coticule out there available.
if this is the case your coticule should be very fast cutter.
i call that sound seems like Sanding.
Every time you make stroke that noise all over the blade not in just one location.

 

[BladeRunner001]

Lap and clean...It's a foreign particle if your stone is lapped and clean.

PS: another possibility (which I have experienced similar to this) is that if you do HHT test, make sure that there's none of the hair sticking to the blade when cut...if it does, it will get caught up during your strokes and that maybe what you are feeling.

 

[mbrossar]

Yes, the hone has been lapped. I've been considering re-lapping it, but I don't want to go to any extremes.

Unfortunately, I don't have any magnification to inspect the blade with, although I've been considering investing in a loupe. So, I don't know if I have any micro-chipping going on.

It's not a sand papery feeling I'm concerned about. It's a click in the stroke. Very much like it is indeed a foreign particle, but I could not detect one and the sensation returned twice after rinsing both the blade and the stone.

Your stubbles are throwing sacrifice whiskers at the coticule in hopes that you will not shave them

Guess I'll try it one more time. If it happens again, I'll be sure to rotate the hone to see if it returns in the opposite side. If it does, I'll re-lap it and go from there.

Thanks.

 

[life2short1971]

When you find the source just rub it out with the head of a pin under water. The little divot won't hurt anything. Just rub it down a mm at the most.

 

[wdwrx]

I've just experienced the same thing. Nothing visible, but i'm fairly sure there was tiny inclusion, or possibly, but unlikely, a very tiny piece of metal from a micro chip stuck in it. The only thing I could see was a teensy little speck of white. I gave it a couple good rubs with a DMT type thing, and that seemed to solve it.

 

[chess1]

if you don't have sanding sound then most likely you have foreign body.
This is how you find out.
buy loop and exam the edge. you should have exact location chips. then put blade to the stone and make straight strokes check the edge again.
you should see new chips if metal still in the stone.
You will need to lap that stone until you get that object out.gl

 

[BladeRunner001]

I found this post on SRP which may help you...it maybe a natural, but prominent garnet inclusion in your stone

 

[SliceOfLife]

Similar things happen to me often.

Most of the time it's a stray hair or bit of dust that fell on the stone.

Second most it's a bit of metal that fatigued off.

Third most it's a small chunk of the hone that broke off (issue with jnats that aren't cut on all sides or stones with chalky inclusions)

I think if it were a harder than steel inclusion like quartz that it'd be pretty easy to identify it, given that it wouldn't move, and would be consistent.

 

[Woodash]

similar things happen to me often.

Most of the time it's a stray hair or bit of dust that fell on the stone.

Second most it's a bit of metal that fatigued off.

Third most it's a small chunk of the hone that broke off (issue with jnats that aren't cut on all sides or stones with chalky inclusions)

i think if it were a harder than steel inclusion like quartz that it'd be pretty easy to identify it, given that it wouldn't move, and would be consistent.

+1

 

[twoods]

I've tried lapping mine a few times, but there's still some spots that just won't get smooth

 

[life2short1971]

Identify the spots. Are they a single click or an area of roughness so to speak?

 

[twoods]

More like areas of roughness. I've lapped the stone with some wet/dry sandpaper, but the edge of the stone still seem to grab from time to time.