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Okay Master of the great wood turner, lathe tool sharpening queries.... I have both a grinder and a table top belt sander. which do you think is better to use for a beginner and which grit for the sander and grind wheel. i was watching videos but they dont tell me. so i am looking to the masters for help.

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IMO, the bench grinder is better because there are dedicated sharpening jig systems for grinders that are nearly fool proof. I sharpen with 180 grit cbn wheel but I used  an 80 grit for a long time with decent results. The Oneway Wolverine system  is the most popular sharpening jig on the market. I don't believe it's the best but it's the most popular and what I use.

 

Steve

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You are less likely to overheat the tools using the belt sander, unless the grinder is a slow speed grinder (around 1700 RPM)

 

The belt sander should not remove as much material as quickly. For touch-ups, I'd start around 150 or 180 grit- but that's just me. 

 

If you need to regrind a tool shape/angle the bench grinder may offer more control of the shaping process. There are lots of jigs available (or shop made) to help create the proper grind/shape that are designed to be used with bench grinder setups.

 

I have an old Tormek water grinder. It is great for touch-ups but not so good for reshaping. Also, it takes extra time to setup and get ready to use.

 

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You could get the Wolverine Jig and set it up to use with the belt sander.  A slow speed grinder and CBN wheels are all the rage today.  I use a belt sander and special homemade jig to sharpen with but am working towards the CBN wheels.  Need to get on the ball and order the wheels I have the slow speed grinder.

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I am in the boat with Steve. I have an 80 and 160 CBN on a slow grinder. Note CBN have gotten cheaper and you can get a wheel for less than 100 now from HERE .

Wolverine Jig is great for reputability which is essential to sharpening. No experience on sharpening on a sander but there is a learning curve for any sharpening method.

If you cannot get a CBN best would be white wheels in 80 or 120.

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