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Messages - RichColvin

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1
General Tormek Questions / Re: Tormek bgm 100
« on: Yesterday at 11:40:40 am »
David,

I followed the instructions (https://www.tormek.com/media/973826/mounting_instruction_bgm-100_en.pdf) to the letter for mine, and didn’t find any issues until I had worn the grindstone wore down significantly (e.g., the 8 inch grindstone was under 6 inches).

That said, adding a block of ½ or ¾ inch plywood should not be a problem. 

I was using it on my 8 inch bench grinder.  I just switched to a OneWay Wolverine platform, and welded a piece together to enable using the XB-100 base.  That is working better for me, but I need a new 8 inch grindstone for the B setting to work. 

The worn grindstone is just too small.  And Ken taught me to accept that grindstones are like brake shoes:  consumables that have to be used and replaced on a regular basis. 

Kind regards,
Rich

2
Wood Turning / SJ-250 for sharpening ornamental turning cutters
« on: Yesterday at 04:08:26 am »
In ornamental turning, it is vital that the cutters be sharpened to a mirror finish. 

Jon Magill wrote a really great article for the Spring 2008 edition (Vol 23, #1) of AAW's "American Woodturner". In the article titled, Build an Overhead Drive (pages 30-31), he wrote:

Quote
Cutters must be sharp! You will never achieve a reflective cut off the tool, which is always the goal in OT, if your cutter isn’t sharp. I once read that you can never get a better finish off of your tool than the finish on the tool itself. In other words, unless your cutter has a mirror finish, you cannot expect to produce a mirror finish on your work.

The attached picture shows the results of sharpening my cutters with the SJ-250.  By the way, there is no sanding here -  this is straight off the rose engine lathe.

Kind regards,
Rich

4
General Tormek Questions / Re: Tray for Tormek
« on: February 21, 2020, 02:44:46 pm »
I use a dish drying tray as the ribs keep the machine away from any spilled water.  I use this one.

https://www.amazon.com/OXO-Grips-Large-Silicone-Drying/dp/B004ZLAG54?psc=1&SubscriptionId=AKIAILSHYYTFIVPWUY6Q&tag=duckduckgo-exp-a-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B004ZLAG54

It is rubberized so I can’t spin it easily to turn the machine around, but I use the Tormek RB-180 Rotating Base so it is not an issue. 

Kind regards,
Rich

5
Knife Sharpening / Re: Laser Knife Edge Reader
« on: February 21, 2020, 02:38:18 pm »
Bob,

So, the primary angle is 8° per side, and the secondary/micro bevel angle is 13°?  Is that how one reads this?

Kind regards,
Rich

6
Wood Turning / Re: how to correct gouge with concave wings
« on: February 20, 2020, 01:32:18 pm »
BlackHawk,

I've cataloged quite a bit of information about bowl gouges, including rake angles.  It may be helpful for you.

        https://www.SharpeningHandbook.info/WW-BowlGouge.html

Kind regards,
Rich

7
General Tormek Questions / New "must have" for the sharpener (?)
« on: February 19, 2020, 04:53:40 pm »
Well, here is something that I am sure each sharpener will want to order soon ...

NeoScope JCM-6000 Benchtop Scanning Electron Microscope from Nikon Instruments
https://www.labcompare.com/1346-Scanning-Electron-Microscopes-SEM/9180430-NeoScope-JCM-6000-Benchtop-Scanning-Electron-Microscope/

8
Wood Turning / Re: how to correct gouge with concave wings
« on: February 19, 2020, 12:10:49 pm »
I agree with Twisted Trees. 

9
Wood Turning / Re: bowl gouges sharpening - "other shapes" graph
« on: February 18, 2020, 01:21:38 pm »
Ken,

I get it.  That’s why I reshape on a bench grinder (using the Tormek jigs) & sharpening on the Tormek.

Kind regards,
Rich

10
Ah, OK, that makes sense now. 

I am one to never stifle innovation & especially not creativity, but I think there needs to be a big caution here for those new to using the Tormek:  Use of such math is not required to get really sharp tools.

I note this as I’ve heard some of my woodturning peers express reservations about Ornamental Turning (my real joyful hobby), saying that too much math is involved.  That is far from the truth, but that perception stops some.

What Mr. Wizard has proposed is a very interesting and innovative approach, and as CB rightly notes helps to prove the other approaches to calculating the setup as right (or maybe wrong).  We just need to be cautious not to frighten any away from using this wonderful sharpening method.

Kind regards,
Rich

11
All,

I'm a bit confused.  To me, this is simply basic trigonometry for a static system. 

It doesn't seem like higher level math is really needed, so I don't understand how complex numbers fit into this.  What am I missing?

Kind regards,
Rich

12
General Tormek Questions / Re: SG Waterstones for Flat-Bevel Sharpening?
« on: February 16, 2020, 04:31:03 am »
Chris,

I was just using the side of both my SB-250 & SJ-250 grindstones.  I used the side to sharpen the flat on a fly cutter for my rose engine lathe.  Worked well, but now I am questioning the value of a flat grind vs a concave one for that.

I’m less concerned about the SB grindstone as I will have to replace it in a reasonable timeframe.  But I was hoping to keep the SJ grindstone for many, many years. 

What you are asking is a good question.  I am interested in what others have to input.

Kind regards,
Rich

13
General Tormek Questions / Re: For sale?
« on: February 12, 2020, 04:41:43 am »
Ben,

I have a T-2000 that I bought in 2002.  I’ve made some replacements and a few repairs.  But, if I were to buy another one, I would opt for a new one over a used one.  The used ones usually are highly priced.  And, Advanced Machinery will tailor an order for me, not making me buy jigs I already have. 

Some talk about the warranty on new ones, but I would instead urge you to look at the design advantages.  The T-8 is vastly superior to the earlier models, especially the T-2000. 

The jigs work on all machines.  So used options seem like a good idea, but they probably aren’t. 
  • The SVD-186 is a huge improvement over the SVD-185, and
  • the new TT-50 is no comparison to the old ADV-50D.

So, if you get one used, be sure it is at a greatly reduced price ... or go new. 

Kind regards,
Rich

14
Knife Sharpening / Re: Homemade FVB vs KG FVB
« on: February 03, 2020, 02:46:11 am »
Victor,

I’ve cataloged a number of options here => http://sharpeninghandbook.info/indexCalc.html

Kind regards,
Rich

15
Knife Sharpening / Re: Using the Japanese Water Wheel to create burrs.
« on: February 03, 2020, 02:39:43 am »
Yes sir.  I use a DMT D8X 8-Inch Dia-Sharp Continuous Diamond Extra-Coarse.

https://www.amazon.com/gp/product/B001DZOKNY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

It works extremely well.  I was just using it this week when resharpening a number of drill bits.

Kind regards,
Rich

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