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Messages - RichColvin

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1
General Tormek Questions / Re: Tormek stone grader
« on: July 12, 2019, 12:12:44 pm »
2. I've read two opposing views: that the stone grader should NOT be used on the Japanese stone, and that it CAN be used on the Japanese to remove the inevitable black marks/glazing. Any opinions on this would be appreciated (if no, what do people do to occasionally clean up the black marks.

Cheers...John

For the SJ stone, Tormek states that the fine side of the stone grader can be used.  That was ok for me, but I prefer to use a Nagura stone.  Ken lent me his, and it worked so well that I bought one.   https://www.amazon.com/gp/product/B0037M4R7A/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Kind regards,
Rich

2
General Tormek Questions / Re: Grit thoughts
« on: July 11, 2019, 02:48:06 am »
John,

When you grind on the Tormek with any stone, there is a slight concavity to the grind (very slight) as noted by others.  If you then hone that grind on a flat stone, there is a secondary, micro bevel at the top and bottom of bevel as noted in the exaggerated picture below.


Or possibly,


This is what is formed by your ceramic flat stone. 

If there is a dullness in the concave part of the grind, it is probably grit from the grinding, not a change in the surface. 

I could be wrong though, so I welcome other thoughts.

Kind regards,
Rich

3
Knife Sharpening / Re: laser protractor
« on: July 08, 2019, 02:10:56 am »
Jan made a laser goniometer using an kid’s erector set. The instructions are here :

         https://www.sharpeninghandbook.info/Tool-Jig-Laser-Goniometer.pdf

Nice, simple, & very inexpensive option.

Kind regards,
Rich

4
General Tormek Questions / Re: Truing Procedure
« on: June 30, 2019, 04:48:37 pm »
All,

I've identified a different approach that I have found to be adequate.

After reading that Wootz noted how the Tormek SP-650 Grading Stone would not de-glaze the SB stone, I purchased a diamond plate to do that.  The one I purchased is the DMT D8X 8-Inch Dia-Sharp Continuous Diamond Extra-Coarse (220 mesh, 60 micron).  I got mine at Amazon. https://www.amazon.com/gp/product/B001DZOKNY/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1 .

The "stone" is large (8" x 3" x 0.38"), and heavy (2.2 lbs).

What I've found is that it does a great job de-glazing the SB stone, but it also smooths out the surface after re-grading the stone (if that is desired).

And, being so course, it happens fast -- probably faster than any other method I've seen.  And, oddly enough, the surface left on the grindstone is quite smooth!

Anyway, just a thought.

Kind regards,
Rich

5
Scissors Sharpening / Re: First Scissors to try sharpening.
« on: June 29, 2019, 03:55:40 pm »
Alf,

Jan’s comments are spot on. 

One more thing :  go slow and use VERY LITTLE PRESSURE!   Scissors grind down fast.  And you don’t want to go too far.

As for angles, Steve Bottorff provided his experience, and I’ve catalogued them on my Sharpening Handbook at http://sharpeninghandbook.info/index-SC.html .  One thing he noted is that some scissors have different angles for the two sides. 

Here’s a link to Steve’s detailed information:  https://sharpeningmadeeasy.com/scissor.htm

Kind regards,
Rich

6
General Tormek Questions / Re: Grinding of tool steel
« on: June 29, 2019, 06:16:54 am »
Antz,

Thank you for posting this document.

Since joining this group I have found myself refreshing my Mechanical Engineering knowledge and skills. I have found it most enjoyable. During my professional career I drifted off the path at some point to management and then to IT. While I got broad exposure to a number of areas I do miss the mechanical subjects. I think Wootz's site began my awakening.

Yeah, IT kills all the fun in life (I’m an IT manager).

7
Knife Sharpening / Re: The O-ring of knife jig
« on: June 27, 2019, 03:26:25 pm »
If Tormek support can’t help, McMaster Carr sells o rings.  https://www.mcmaster.com/o-rings

McMaster Carr may be US-only.  SharpCo, don’t know if they can send to you.  May be other suppliers though.

Kind regards,
Rich

8
Wood Turning / Re: Stu Batty 40/40 grind
« on: June 27, 2019, 03:11:14 pm »
I think it is doable with the SVD-186.   I don’t use that grind, but I know a 40° nose bevel is doable, and the 40° wing angle is about the grind depth on the side swings. 

I’ve detailed this in my Sharpening Handbook on this page :  https://www.sharpeninghandbook.info/WW-BowlGouge.html.

I really recommend the SVD-186 based approach.  It is very repeatable.

Kind regards,
Rich

9
Knife Sharpening / Re: The O-ring of knife jig
« on: June 24, 2019, 07:36:44 pm »
Since I’ve started using the pin pivot jig, I don’t leave the black handle on the knife jig.  Thusly, it doesn’t matter.

Kind regards,
Rich

10
Knife Sharpening / Re: Unknown "Soft" Knives
« on: June 24, 2019, 02:32:49 am »
Edge trailing is my preference if it works.  Much easier to control for what I sharpen, and minimizes loss of metal.


Edge leading is more aggressive, and necessary for really hard metals like carbide inserts. 

I also find edge leading necessary when using platforms like the SVD-110 Tool Rest.  When using edge trailing with the SVD-110, the tool tends to get grabbed and pulled away from the platform.


But as Ken notes, let your own experience guide you.

Kind regards,
Rich

11
General Tormek Questions / Re: Homemade pivot collar for knife jig
« on: June 24, 2019, 02:23:10 am »
Antz,

Nice work.  You will like this update to the knife jig.

Kind regards,
Rich

12
Antz,

I did that on my SJ wheel as I was being too aggressive when truing the grindstone.  Good news is that it didn’t affect the way it works.  Just looks bad (and reminds me to be more patient).

Kind regards,
Rich

13
Knife Sharpening / Re: Bowie Knife
« on: June 20, 2019, 02:40:05 am »
... I can't understand how I used to work before I bought the Tormek, the differnce in sharpnes I can't believe it ...

Amen brother.

14
Knife Sharpening / Re: a new angle setting tool
« on: June 16, 2019, 03:19:53 pm »
Rick,

Did you use skate-board ball bearings like these "https://www.amazon.com/gp/product/B002BBD6X4/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 ?

Kind regards,
Rich

15
General Tormek Questions / Re: Tormek Bloopers anyone???
« on: June 14, 2019, 06:14:47 pm »
Antz,

That needs a video.

Rich

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