Author Topic: Retired my old SB grindstone  (Read 433 times)

Offline RichColvin

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Retired my old SB grindstone
« on: September 20, 2019, 10:45:58 pm »
Today, I was resharpening some drill bits with the DBS-22 Drill bit sharpening attachment.  My SB-250 grindstone is so worn (lovingly used down to 180 mm) that I had to take off a knob on the USB’s base so the DBS-22 would not hit it.

It seems my old SB stone that has finally reached it’s retirement. 

SB, thank you for the great work over many years.  RIP my old friend.  Enjoy your days with my retired SG-250 stone.

Rich
« Last Edit: October 13, 2019, 04:01:56 pm by RichColvin »
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Rich Colvin
www.SharpeningHandbook.info - a reference guide for sharpening
www.OTBoK.info - help those getting started in ornamental turning -- to make that journey easier.

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

Offline Ken S

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Re: Retired my old SB grindstone
« Reply #1 on: September 21, 2019, 12:51:17 am »
Rich,

Best wishes for your SB-250 in its well deserved, honorable retirement.

In its credits, please include keeping my faith alive when my SB kept glazing.

Ken

Offline jeffs55

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Re: Retired my old SB grindstone
« Reply #2 on: September 21, 2019, 03:38:05 am »
Could it be repurposed for a T4 by reducing its width? A lathe type setup and a TT for a cutter perhaps.
You can use less of more but you cannot make more of less.

Offline RichColvin

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Re: Retired my old SB grindstone
« Reply #3 on: September 21, 2019, 03:49:52 am »
It can be repurposed for a T-4 with no changes.  More details about using a worn down 250mm stone on a 200mm machine are at this page :  https://sharpeninghandbook.info/Grindstones-StoneLife.html

I looked into this, and while it is an option, it didn’t merit the cost of a T-4 for me.  (I’d opt for a second 250mm machine instead.)

What is generally agreed is that, if you need a T-4 anyway (e.g., to carry it to a farmers market), then this may be a good option.

In the 17 years I’ve owned the T-2000, I’ve totally consumed only two grindstones :  One SB-250, & one SG-250.

Kind regards,
Rich
« Last Edit: September 21, 2019, 03:52:15 am by RichColvin »
---------------------------
Rich Colvin
www.SharpeningHandbook.info - a reference guide for sharpening
www.OTBoK.info - help those getting started in ornamental turning -- to make that journey easier.

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

Offline jeffs55

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Re: Retired my old SB grindstone
« Reply #4 on: September 21, 2019, 12:11:36 pm »
Put them on eBarf but make a note they can be used on a T4. Otherwise no one will know. They are way to heavy for paperweights or doorstops.
You can use less of more but you cannot make more of less.

Offline Ken S

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Re: Retired my old SB grindstone
« Reply #5 on: September 21, 2019, 02:02:19 pm »
Steve Bottorff used eight worn grinding wheels (a pair in each corner) as wind protection for his sharpening stand. In addition to being practical, they sent out a subliminal message that he was a very experienced sharpener.

With the water trough removed, a 250 mm SG or SB wheel will fit on the T4. It can only be used dry this was. The bore length of the T4 and T8 wheels is close enough that normally no extra spacers are needed. I can see possibilities for 250mm felt wheels used this way. I would question the added weight of the thicker stones on the T4 motor.

Incidentally, T4 wheels can work with the T8. This can be useful as some wheels such as the Norton 3X wheels are only available in 200mm diameter.

Ken

Offline RichColvin

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Re: Retired my old SB grindstone
« Reply #6 on: October 13, 2019, 04:00:26 pm »
Well, like so many of us, my old SB stone failed at retirement.  CB from the forum reached out to me and requested both my old stones for his T-4.  I was happy to see them no longer gathering dust in my shop, and sent them to him.

As CB noted to me, “they are working like a champ”.   Glad to see these stones will continue to provide many years of great service.

Kind regards,
Rich
---------------------------
Rich Colvin
www.SharpeningHandbook.info - a reference guide for sharpening
www.OTBoK.info - help those getting started in ornamental turning -- to make that journey easier.

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

Offline Ken S

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Re: Retired my old SB grindstone
« Reply #7 on: October 13, 2019, 04:56:28 pm »
Well done, Rich! (and CB!) You have ventured beyond conventional Tormek thought.

Ken