Retired my old SB grindstone

[RichColvin]

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

[Ken S]

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

[jeffs55]

Could it be repurposed for a T4 by reducing its width? A lathe type setup and a TT for a cutter perhaps.

[RichColvin]

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

[jeffs55]

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.

[Ken S]

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

[RichColvin]

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

[Ken S]

Well done, Rich! (and CB!) You have ventured beyond conventional Tormek thought.

Ken