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265146 "John M Johnston (jmjhnstn)" <jmjhnstn@m...> 2018‑02‑16 Re: What is a good slow speed grindstone
My Tormek water cooled grinder runs at 90 RPM.  Jet is probably the same.

John


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-----Original Message-----
From: OldTools [mailto:oldtools-bounces@s...] On Behalf Of Kirk Eppler
Sent: Friday, February 16, 2018 3:39 PM
To: Cal Meier 
Cc: Tools Old 
Subject: Re: [OldTools] What is a good slow speed grindstone

On Fri, Feb 16, 2018 at 10:58 AM, Cal Meier  wrote:

> I receive advertisements talking about "low speed" grinders for 
> sharpening tools.  When I check, the speed is commonly listed at roundly 1750
rpm.
> What is a good "low speed" to sharpen at using an 8" wheel.  Any 
> thoughts or strong opinions would be appreciated.
>
>

Most normal vertical wheel grinders are 3450 rpm

Slow is 1750 rpm

I also have a LV horizontal disc for slow, but its pricey.

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