Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - Sharpco

Pages: 1 ... 23 24 [25] 26 27 28
361
Knife Sharpening / Whetstone vs Tormek
« on: November 12, 2017, 06:04:59 am »
Tormek can sharpen the knife quickly and precisely. But there are people who like whetstone more than Tormek, and some claim that blades sharpened with whetstone will last longer. So some of them first use Tormek and then finish with the whetstone.

Do you think whetstone's sharpening quality(edge retention etc.) is better than Tormek?

362
Knife Sharpening / Re: Maximize edge retention
« on: November 11, 2017, 02:04:51 am »
Thank you cbwx34.

I will try to remove the burr completely to resolve the knife dying quickly.

363
General Tormek Questions / Re: A curved stone grader
« on: November 09, 2017, 12:15:05 pm »
Give a try of my discovery several month ago.
At the end of your working session, unmount the SJ Stone and put it in a tank with tap water.
You will see that 90% of carbon dark traces will disappear and potentially 100% if you give few movements of hand brush and 2 drops dishwashing liquid soap.
Let me know if it works.  ;)

Thank you for telling me another way to clean the SJ. However, I often have to sharpen more than 5 knives at a time and usually I need to clean the SJ once every three. So I need a faster and simpler way.

364
General Tormek Questions / Re: A curved stone grader
« on: November 09, 2017, 12:57:13 am »
I'll buy it. Is there a difference in cleaning speed?

365
Knife Sharpening / Re: SJ stone problem
« on: November 09, 2017, 12:55:30 am »
Thank you so much cbwx34.

366
Knife Sharpening / How strongly do you press the leather wheel?
« on: November 08, 2017, 10:00:21 am »
It is generally known that you should not press hard when honing. But when I use Tormek leather wheel without the jig, it is effective to press it strong enough. What about your thoughts?

367
General Tormek Questions / A curved stone grader
« on: November 08, 2017, 09:48:30 am »
This is a stone grader I use only for SJ stone. That is, it is not worn at all. But as I checked today, it was curved as a whole.

Could this be the cause of the following?

https://www.tormek.com/forum/index.php?topic=3415.0

Is there any other way to clean the SJ stone besides the Stone grader?

368
Knife Sharpening / Re: SJ stone problem
« on: November 08, 2017, 09:33:49 am »
The real issue isn't a problem with the SJ wheel, (or even the Tormek).  The issue is the design of the knife where it meets the plunge line at the heel.  That little "flare out" causes the sharpening medium to improperly contact the stone, resulting in an ever so slightly uneven grind in that area.  It's also why you have a second area in front of the yellow circle that is similar, but smaller.  The uneven grind isn't noticed until the polishing wheel, because the coarser wheel makes enough contact and grinds enough steel away to make it look OK, but since the finer wheel is just polishing, it doesn't remove enough steel to overcome the uneven grind.

The best solution is a "sharpening notch" or "sharpening choil" (an internet search will give you more info).  2nd is to grind a bit on the part where it flares out... this will result in a wider bevel in that area.  But since neither option is a particularly good one... especially on a customer's knife, or if time is an issue... the best option is to try and insure that the edge of the coarse wheel stays in front of the area where it flares out... this will keep the bevel even.  (Over time a  slight "bump" will occur at the flare out point... this can be ground away at 90 deg. on the wheel).

In your example, since you've already sharpened it... you might try spending some more time on the polish wheel, and see if you can improve it... you can also use the microadjust to slightly raise the angle to help polish it out.  And try and insure the wheel doesn't "ride up" on the part that flares out.  (Also don't concentrate too much in one small area... make sure the bevel stays even).

The plunge line is not the only cause. This is because a similar phenomenon is seen in a knife without it. Around heel, there is always a tendency not to be honing properly.

369
Knife Sharpening / Re: Finishing with SJ-250
« on: November 07, 2017, 09:22:03 pm »
I have tried many times with the way wootz told me. Certainly, I was able to get better results than before. Thank you. wootz.

But after honing with SJ, I was able to get a sharper edge using the leather wheel.

"Sharp" is a relative term... how are you testing for sharpness?  (Type of media being cut and type of cut (push vs. slice)).

I tried push cutting with paper.

370
Knife Sharpening / Re: Finishing with SJ-250
« on: November 07, 2017, 02:19:01 am »
I have tried many times with the way wootz told me. Certainly, I was able to get better results than before. Thank you. wootz.

But after honing with SJ, I was able to get a sharper edge using the leather wheel.

371
Knife Sharpening / Re: SJ stone problem
« on: November 07, 2017, 01:59:13 am »
SJ wheel diameter appears to be slightly larger that your SG stone, leading to a mismatch in the angles. Probably too small to readjust, just hone that area a bit longer.
I recommend adjusting hte jig for SJ 1 or 2 degrees higher and justing honing the edge, not the full bevel.

You're right. My SG-250 is smaller than the SJ-250. However, the result is the same when using SB instead of SG. SB is larger than SJ.

And the results were worse when I honed the whole edge for the same amount of time. The photo is the result of honoring Heel a little longer.

The rest of the edge is normally honed, so I think the way to raise the US a little is not a complete solution.

372
Knife Sharpening / Re: SJ stone problem
« on: November 07, 2017, 12:07:27 am »
Did you follow the recommended procedure of grading the SG fine before using the SJ?

Ken

No. My procedure is SG-250(220grit) -> SJ-250.

373
Knife Sharpening / SJ stone problem
« on: November 06, 2017, 11:35:40 am »
When sharpening a knife, using the SG-250 (220 grit) followed by the SJ-250 will leave a scratch around the heel. Is there a solution?

374
General Tormek Questions / How to check the burr
« on: November 05, 2017, 12:14:34 pm »
It is very important to check the burrs when sharpening. But A very small burr is difficult to check with my fingers. Is there any other good way?

375
General Tormek Questions / Re: Leather wheel problem - Peeling
« on: November 04, 2017, 05:29:09 am »
Page 44 of the Handbook says: "One application lasts for 5-10 tools."
This seems to be the cause of the problem. I think it is too much to apply a compound every 10 honing.

I check the sharpness of the edge after each honing and decide whether to re-apply the compound.

Pages: 1 ... 23 24 [25] 26 27 28