Granite Counter Top Scraps for Sharpening Surface Reference

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Forum topic by hhhopks posted 05-22-2012 11:30 PM 6128 views 0 times favorited 25 replies Add to Favorites Watch
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651 posts in 2402 days

05-22-2012 11:30 PM

Topic tags/keywords: question jig tip resource chisel plane blade carving tool sharpening

Has anyone used granite couter top scraps as a reference surface for sharpening? They are typically about 1-1/4” thick. It is smooth and shiny. It looks flat. It looks flat with a straight edge. The various pieces with the finished surface facing each other looks flat. Most source suggest glass plate or a granite plate (typically > 2”).

The question is: Are these granite counter top scraps suitable for as a reference surface to shapen plane blades and chisels?

If you have used it, are you happy with it?

It is just a cost saving idea that I am considering.

-- I'll be a woodworker when I grow up. HHHOPKS

25 replies so far

View RH913's profile


52 posts in 3010 days

#1 posted 05-22-2012 11:34 PM

I’ve got two pieces waiting for the answer…


View ITnerd's profile


263 posts in 2624 days

#2 posted 05-22-2012 11:48 PM

2 granite scraps here – no problems. Biggest problem is moving them around. If you go the glass route, I think the ideal stuff is called 'float glass'.

Best of luck,

-- Chris @ Atlanta - JGM - Occam's razor tells us that when you hear hoofs, think horses not zebras.

View ShipWreck's profile


557 posts in 3778 days

#3 posted 05-22-2012 11:54 PM

I have several pieces. They are more than flat enough. I have a couple longer pieces that I have epoxied at 90 degrees to flatten the sides to the soles.

End splash cut-off’s are the best pieces.

View hhhopks's profile


651 posts in 2402 days

#4 posted 05-23-2012 12:14 AM

It just don’t seems to make sense to buy these. They are literallly given granite scraps away for free. You don’t really need a big piece. The big pieces are heavy and they will charge you for them. It is the small pieces that you can get (less than couple square feet). So weight isn’t issue but the small piece should still able to hold the sand paper in place (better than glass?). I guess I’ll give it a shot and not worry about it. Ultimately the end result will determine if it is a go or not. Right?

-- I'll be a woodworker when I grow up. HHHOPKS

View crank49's profile


4032 posts in 2996 days

#5 posted 05-23-2012 12:14 AM

I have a sink cutout and it works fine.
Have also used a 12” square granite floor tile from HD, about $5.00.
The floor tile works just as well, is lighter and easier to move around, but I really like a little longer surface.

View longgone's profile


5688 posts in 3334 days

#6 posted 05-23-2012 12:36 AM

I have a piece of granite top about 8×10” that I use and it is dead on flat…perfect for sharpening. I glued some 1/2” tall rubber bumper feet to the bottom to make it easier to pick up and keep from sliding. I went to a counter top place and they gave me it for free.

View BTimmons's profile


2303 posts in 2510 days

#7 posted 05-23-2012 01:46 AM

I use one, no complaints. See the most recent blog post on my profile to see it.

-- Brian Timmons -

View cabmaker's profile


1735 posts in 2834 days

#8 posted 05-23-2012 02:03 AM

12X12 floor tile here too !

View PurpLev's profile


8536 posts in 3674 days

#9 posted 05-23-2012 02:09 AM

thats what I use. works fine for me.

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View Brit's profile


7386 posts in 2868 days

#10 posted 05-23-2012 06:02 AM

I use offcuts and even the granite breakfast bar for sharpening and flattening plane soles. I also have a granite cutting board from my local supermarket (£10) that I use for sanding backsaw plates when I restore them. I just hang the brass back off the edge so the plate is flat on the surface.

-- - Andy - Old Chinese proverb says: "If you think something can't be done, don't interrupt man who is doing it."

View Bill White's profile

Bill White

4948 posts in 3986 days

#11 posted 05-23-2012 02:53 PM

Sink cutout here too. Price? Free….Flat? Youbetcha. Price? Free….
I really like free.


View Doss's profile


779 posts in 2290 days

#12 posted 05-23-2012 04:45 PM

Like some others have said, they might be free. If you go by a countertop shop, they’re likely to have a few pieces that are large enough to use that they’ll give away for free. You don’t need a massive piece. Just know what you plan to sharpen and determine the size you need accordingly.

-- "Well, at least we can still use it as firewood... maybe." - Doss

View Bertha's profile


13529 posts in 2718 days

#13 posted 05-23-2012 04:49 PM

Lowes marble windowsill here.

-- My dad and I built a 65 chev pick up.I killed trannys in that thing for some reason-Hog

View Tennessee's profile


2873 posts in 2540 days

#14 posted 05-23-2012 04:51 PM

I’ve used two pieces of tempered layered glass for the last 30 years. Easy to tote around, flat, no problems. I keep 180 grit taped on one for sanding down small wooden items and plastic things, and the other has 400 on it for doing edge sharpening. I would think though, that granite should be true, but there is no law I know of that describes flatness requirements for things like sink cutouts. Still, I would not turn down a piece of granite.

-- Tsunami Guitars and Custom Woodworking, Cleveland, TN

View willme's profile


3 posts in 2086 days

#15 posted 10-04-2012 06:43 AM

i loves granite countertop, but i never use your idea.

indian stone paving at best price

-- indian stone paving at best price

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