Author Topic: Tormek SJ-250  (Read 184 times)

Offline Darrell C

  • Newbie
  • *
  • Posts: 9
  • I'm a sharp craftsman!
    • View Profile
Tormek SJ-250
« on: February 11, 2019, 08:52:16 am »
Say hey guys n gals, I have always had a sharpening fascination all my life, in fact when I retired I started a Scissor and Knife sharpening business, then the calls started to pick up and I was not retired any longer, so I closed the doors, I was using a Tru Hone and Ookami and Ookami Gold systems, dealing with some wimmin beauticians is very interesting........

Anyway, using this SJ-250 I am getting some residue buildup on the stone, I do not want to use the provided truing block at this time, have any of you tried a 6-800 or 1000 wet/dry to clean up the stone? or what is your method?

Thanks Darrell

Offline cbwx34

  • Hero Member
  • *****
  • Posts: 1169
    • View Profile
Re: Tormek SJ-250
« Reply #1 on: February 11, 2019, 01:33:14 pm »
...
Anyway, using this SJ-250 I am getting some residue buildup on the stone, I do not want to use the provided truing block at this time, have any of you tried a 6-800 or 1000 wet/dry to clean up the stone? or what is your method?

Thanks Darrell

I use a fine rust eraser like THIS.

Offline Darrell C

  • Newbie
  • *
  • Posts: 9
  • I'm a sharp craftsman!
    • View Profile
Re: Tormek SJ-250
« Reply #2 on: February 11, 2019, 06:36:57 pm »
HUH!, thanks for the response, I will have to get one, I assume it has an abrasive in it of some sort.............do you find it best using while in wet mode rather than dry?

Offline cbwx34

  • Hero Member
  • *****
  • Posts: 1169
    • View Profile
Re: Tormek SJ-250
« Reply #3 on: February 11, 2019, 06:51:24 pm »
HUH!, thanks for the response, I will have to get one, I assume it has an abrasive in it of some sort.............do you find it best using while in wet mode rather than dry?

It probably does have abrasive, since they come in different finish levels... the fine takes very little off the stone as opposed to other methods though.

Use it in "wet mode".

Offline wootz

  • Sr. Member
  • ****
  • Posts: 376
    • View Profile
    • knifeGrinders.com.au
Re: Tormek SJ-250
« Reply #4 on: February 11, 2019, 08:29:21 pm »
The best for the Japanese wheel cleaning works #1000 diamond plate (a cheap 1mm thick one) clamped in the square jig that comes with your Tormek, as you see on the photo i clamp it with an old plane iron for rigidity


This method assures your wheel surface remains flat and square after cleaning/de-glazing.

How to use is shown in our video https://www.youtube.com/watch?v=UckPmizllk0&t=72s
- watch at 5 min of the video.

I should mention that grit of the diamond plate you use to grade/clean wheels is to be about 2-3 times coarser than the target wheel grit, e.g:
For SG#220 - the diamond plate # should be 80;
For SG#1000 - the diamond plate # should be 400;
For the Japanese SJ #4000 - the diamond plate # should be 1000 or 1200.

These diamond plates will cost you near $5 delivered, they do wear with use, so better order 2 each, avialable on eBay, pick the 75mm wide one.
.
« Last Edit: February 11, 2019, 08:41:02 pm by wootz »

Offline Darrell C

  • Newbie
  • *
  • Posts: 9
  • I'm a sharp craftsman!
    • View Profile
Re: Tormek SJ-250
« Reply #5 on: February 11, 2019, 08:59:08 pm »
I like that Diamond stone also, I have the SE77 as long as I lock it up square, just ordered the Rust Eraser and diamond stone...................

Offline cbwx34

  • Hero Member
  • *****
  • Posts: 1169
    • View Profile
Re: Tormek SJ-250
« Reply #6 on: February 11, 2019, 09:11:57 pm »
I like that Diamond stone also, I have the SE77 as long as I lock it up square, just ordered the Rust Eraser and diamond stone...................

I think these methods work a bit different... so don't hesitate to try both.

The Rust Eraser gives a quick cleaning.  Tormek says on the SJ page...

You should clean the stone surface of steel particles every minute or so...

... while that may be a bit much, you can see the SJ wheel quickly turn black after a short amount of use.  The Rust Eraser, in literally seconds... will remove that and leave a fresh surface.


...
This method assures your wheel surface remains flat and square after cleaning/de-glazing.
...

... The Rust Eraser hasn't shown any bad results in regards to this, since it does so little to the stone.  I also don't have to stop and reposition the USB, like you do with the diamond plate setup.

I've tried wootz method though and it does work... but I'd save it when a little more needs to be done than a quick cleaning since it's a bit more agressive... so since they work a little different, I'm sure you'll put both to good use. ;)

Offline RichColvin

  • Sr. Member
  • ****
  • Posts: 448
  • Woodturner & carver
    • View Profile
    • SharpeningHandbook.info
Re: Tormek SJ-250
« Reply #7 on: February 12, 2019, 03:55:34 am »
I often use a Nagura stone.

Kind regards,
Rich
---------------------------
Rich Colvin
www.SharpeningHandbook.info

You are born weak & frail, and you die weak & frail.  What you do between those is up to you.

Offline Darrell C

  • Newbie
  • *
  • Posts: 9
  • I'm a sharp craftsman!
    • View Profile
Re: Tormek SJ-250
« Reply #8 on: February 12, 2019, 06:48:49 am »
I often use a Nagura stone.

Kind regards,
Rich

what grit would that be Rich.................

Offline RickKrung

  • Hero Member
  • *****
  • Posts: 536
  • Maker
    • View Profile
Re: Tormek SJ-250
« Reply #9 on: February 12, 2019, 08:19:23 am »
I [used to :o] use the type of rust eraser CB shared the link to.  Works great, thoroughly cleans the stone surprisingly quickly.  I used to use a Nagura stone, which worked okay, but haven't since getting the above rust erasers.

I also [used to :o] use a 1000 grid diamond plate like Wootz shares, although I did not use it in a jig.  I just free-handed it. I was only trying to clean refresh the surface of the stone, not true it. 

Only once did I use the truing tool.  Didn't like it.  Left tiny cavities, which I suspect were air bubbles before being exposed.  But, I am sure it is necessary to true it up once in a while. 

I never used the grading stone on the SJ wheel.  Just didn't feel right. 

Rick
« Last Edit: February 12, 2019, 04:52:59 pm by RickKrung »
If you want nice clean, fresh oats, you must pay a fair price. However, if you can be satisfied with oats that have already been through the horse, that comes at a lower price.

Offline cbwx34

  • Hero Member
  • *****
  • Posts: 1169
    • View Profile
Re: Tormek SJ-250
« Reply #10 on: February 12, 2019, 03:49:48 pm »
I [used to :o] ...

I also [used to :o] ...

For those who don't know... Rick says "used to" because he was getting knives so sharp, the State of Oregon took him to court as a danger to the public... and made him destroy his SJ wheel in the public square. ;)

Offline RichColvin

  • Sr. Member
  • ****
  • Posts: 448
  • Woodturner & carver
    • View Profile
    • SharpeningHandbook.info
Re: Tormek SJ-250
« Reply #11 on: February 12, 2019, 05:18:53 pm »
I often use a Nagura stone.

Kind regards,
Rich

what grit would that be Rich.................

As I understand it, Nagura stones don't have a grit per se.  In any regard, I use this one that I got from Amazon :  https://www.amazon.com/gp/product/B0037M4R7A/ref=oh_aui_search_asin_title?ie=UTF8&psc=1

Kind regards,
Rich
---------------------------
Rich Colvin
www.SharpeningHandbook.info

You are born weak & frail, and you die weak & frail.  What you do between those is up to you.

Offline Darrell C

  • Newbie
  • *
  • Posts: 9
  • I'm a sharp craftsman!
    • View Profile
Re: Tormek SJ-250
« Reply #12 on: February 13, 2019, 02:41:11 am »
Thanks Guys, I have a little bit of everything suggested, I will give them all a try and see what works best for me..........