Jus tbought a brand new granite block for sharpening....

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Forum topic by westside posted 01-15-2010 04:25 AM 2206 views 0 times favorited 5 replies Add to Favorites Watch
View westside's profile


77 posts in 2532 days

01-15-2010 04:25 AM

The question i have is how do you use it? I also bought a six piece woodriver chisel set should I hone these before using? Does anyone have one of these granite blocks for sharpening? What kind of sandpaper do you use? What grit do you start with and work your way up with? Sorry for so many questions, I am just looking forward to using my new tools and just want to make sure they are sharp enough. Beside I always wanted to learn how to sharpen. The guy at the store told me I should start with this block and get the right kind of sandpaper. He said it was important to make sure you have a flat surface to sharpen on.

Any help anyone can give me on how to make best use of this block is appreciated.

Thanks, Rich

5 replies so far

View hokieman's profile


173 posts in 3170 days

#1 posted 01-15-2010 06:11 AM

Just google “scary sharp” and you will get a lot of hits. Scary sharp is the method where you use sandpaper on a dead flat surface (like you just bought). Typically use various grades of wet ‘n dry sandpaper. Depends on what stage of sharpening you are at. Could go from 220 grit all the way up to 2000 (available at auto parts stores) and some specialty woodworking sites sell the super extra fine 10, 5 and 0.5 micron grits which will act to buff the surfaces to a mirror finish. Good luck on your web search. You can also look up scary sharp on YouTube as well. All kinds of information out there on it.

View ajosephg's profile


1878 posts in 2977 days

#2 posted 01-15-2010 06:16 AM

Hokieman’s got it.

Re wet;ndry sandpaper. Some auto parts store will sell single sheets, others will only sell a whole box, so look around if you’re not ready to shell out a whole bunch of money.

-- Joe

View Dez's profile


1162 posts in 3493 days

#3 posted 01-15-2010 07:59 AM

Auto parts store and Automotive paint stores will most likely be the only place that you will find the finer grades (finer than 600), otherwise you will probably have to order them online. Wet and Dry sandpaper, silicon carbide.
Take a look at the finish grind on the chisel, mirror finish on the back and a small, fine finish on the bevel and they should be ready to use. Test them on your thumbnail, if they “catch” instead of sliding, they are ready to use.
Some, ( a few, not all) will come ready to use if they are quality tools.

-- Folly ever comes cloaked in opportunity!

View Mark Briley's profile

Mark Briley

25 posts in 2669 days

#4 posted 01-15-2010 07:53 PM

I have one and use it to flatten my Shapton honing stones which works very well for keeping them flat. Lie Nielson has a YouTube channel that demonstrates how to use it with wet/dry sandpaper…

-- Mark, Utah

View PaulfromVictor's profile


224 posts in 2762 days

#5 posted 01-15-2010 08:59 PM

LeeValley offers indidual sheets. 320 is the coarsest grit they have. You may need coarser to flatten the backs on your chisels and get the blade intially sharpened. You definitely want silicon carbide wet/dry paper. I sharpen through all grits up through 2000.,42500

As mentioned, “scary sharp” is definitely the way to go. This book has a good explanation of the process. Check your library for it :

I don’t know how much a granite block costs, but granite floor tiles from HD are a good option. I bought a couple cheapies on clearance for a couple bucks a piece. 2 square feet of flat surface is enough space to get through all of your grits.

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