Tormek Community Forum

In the Shop => General Tormek Questions => Topic started by: YukonJake on October 22, 2025, 06:43:22 PM

Title: Sharpening 28mm Rotary Blades?
Post by: YukonJake on October 22, 2025, 06:43:22 PM
Has anyone tackled sharpening 28mm rotary blades? If so, are there jigs out there that would fit the T8?

Thanks much.
Title: Re: Sharpening 28mm Rotary Blades?
Post by: tgbto on October 23, 2025, 09:23:08 AM
The only jig I know of is described on Rich Colvin's treasure trove of a website (https://www.sharpeninghandbook.info/GT-Rotary-Cutter.html).

It requires *a bit* of craftmanship, though...
Title: Re: Sharpening 28mm Rotary Blades?
Post by: Dutchman on October 23, 2025, 11:12:42 AM
Tormek has a Round Blade Sharpening Attachment:https://tormek.com/en/products/culinary/culinary-accessories/rbs-140-round-blade-sharpening-attachment (https://tormek.com/en/products/culinary/culinary-accessories/rbs-140-round-blade-sharpening-attachment)
Title: Re: Sharpening 28mm Rotary Blades?
Post by: Drilon on October 23, 2025, 11:57:59 AM
But it fits the T2 sharpener only.

Title: Re: Sharpening 28mm Rotary Blades?
Post by: RickKrung on October 23, 2025, 05:46:21 PM
A creative mind and a bit of ingenuity can go a long way, which is amply evident in all that Rich Colvin does. 

The manual for the RB-140 is here (https://tormek.com/download/18.402bf0b018388c67fde249/1664457601051/Instruction%20RBS-140.pdf).  It states that the range of blade sizes it works with is 80-140mm.  But If the mounting shaft size is 12mm, as every other Tormek jig is, it will likely "fit" on the standard USB. From there, it could be just figuring out how to make it work.  28mm is pretty small (1.1"), so that could be your biggest challenge and Rich's jig may be a better approach. 

Do a search on the forum for the jig, using the term "RBS-140 Round Blade" and read what discussion there has been about this jig and round blades in general.  It does return some irrelevant stuff.