Thread: Big Chip

Today I thought I'd hone a blade 7/8th's Hart.
I was gonna refresh on the 5k and then do some Naguras on the Jnat. Rolling strokes only, definitely non of those harsh evil circles .

After refreshing on the 5k Chosera I noticed what looked like a piece of filth but in fact it turned out to be a huge monster chip next to the heel.
I got the 1k out and started going at it... No joy, this would need my Shapton 500k.

It took an age of sweating and heavy circles, there was metal every where.

Finally I got it back on the 1k and then on the 5k where I noticed a part near the tip that wasn't touching the hone. I tried a few tricks but I could tell that I'd taken too much from that spot on the 500k , so I headed back to the 500k and did a bag full of light X's to try and even everything out.

It did the trick, so I went back again to the 1k which wouldn't set the bevel, I nearly gave up at that point but instead I made a slurry and managed to set the bevel.
Then the 5k and then a few Naguras to a finish.
And that's my life story

Pictures bellow...


After a go with the 1k


After some time on the 500k



More 500k



& More



More


This will do for the 500k



1k


5k



Nakayama

Looks like it worked. I would have breadknifed it and reset the bevel. Same results and a little quicker.

Hope you were off the spine, or at least lots of tape...

Don’t forget to re-shape that heel.

Originally Posted by Euclid440

Hope you were off the spine, or at least lots of tape...

Don’t forget to re-shape that heel.

Yep, looks like a precursor to a Cut Of The Day entry.

Off the spine. I don't know what that means.
I'm making this up as I go along

I did use a load of tape.

Hone with the spine off the stone, not touching 45 degrees to the stone or higher, just to grind off metal.

On a chip like that I would start out with about 3-4 layers of tape and use my 400 naniwa until the chip was gone and then set in with the 1K. You did good though.

Should that heel be rounded?

I had a shave with it today and it was a fail, it got me a clean shave but no where near what im looking for.
Back to the grind stone or honing stone

Yes reshape the heel, or it will cut you.

When you remove a chip of that size, you remove a lot of steel and will have to re-set a bevel, by honing a lot of steel from the bevel. This is not a simple honing, it is a repair. Make sure you have properly set the bevel without using a very low grit stone or excessive pressure. If so, you may experience edge chipping at higher grits and an uncomfortable shave.

First, look at the edge, to see if the bevels are meeting, then even if they are, re-set the bevel on a 4k and move up through your progression.

If they are not meeting fully, re-set the bevel on a 1k, without a lot of pressure, Hart razors are hard and prone to chipping, if excessive pressure is used.

If you experience chipping, Joint to remove the chipping and re-set the bevel on the 4k.

Originally Posted by Euclid440

Yes reshape the heel, or it will cut you.

When you remove a chip of that size, you remove a lot of steel and will have to re-set a bevel, by honing a lot of steel from the bevel. This is not a simple honing, it is a repair. Make sure you have properly set the bevel without using a very low grit stone or excessive pressure. If so, you may experience edge chipping at higher grits and an uncomfortable shave.

First, look at the edge, to see if the bevels are meeting, then even if they are, re-set the bevel on a 4k and move up through your progression.

If they are not meeting fully, re-set the bevel on a 1k, without a lot of pressure, Hart razors are hard and prone to chipping, if excessive pressure is used.

If you experience chipping, Joint to remove the chipping and re-set the bevel on the 4k.

Thanks for the advise. I did find a small micro chip.
Hart blades are hard/brittle, I think that's what gives an excellent edge.