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which thickness for grinding wheel should I get or maybe it doesn't matter

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Forum topic by Mrdouble posted 10-02-2013 06:35 AM 944 views 0 times favorited 4 replies Add to Favorites Watch
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Mrdouble

4 posts in 1383 days


10-02-2013 06:35 AM

Please don’t flame me if this is a sticky somewhere; I truly did look.

Tomorrow I want to order a 3X norton grinding stone for my grinders ( hand and 1/3 Hp benchgrinder) primarily for sharpening planes and chisles.

My question is; is there an advantage to getting a 1 inch thick wheel over a 3/4 inch stone?

Since ill be purchasing a diamond dresser to go along with it and putting a crown on it I was thinking a 1 inch would offer no advantage since contact would be in center. Still, thought maybe id ask as there may be other reasons i haven’t considered (better vibration dampening, better balance…)

Thanks
Mike from michigan


4 replies so far

View Fred Hargis's profile

Fred Hargis

3950 posts in 1961 days


#1 posted 10-02-2013 11:01 AM

If you choose to go with the thicker stone, make sure the arbor on your grinder will handle it. Aside from that, I like the wider working surface of the 1” wheel and it may do some of that other stuff (vibration, so on) but not that I noticed.

-- Our village hasn't lost it's idiot, he was elected to congress.

View bigblockyeti's profile

bigblockyeti

3668 posts in 1188 days


#2 posted 10-02-2013 12:00 PM

I always get the widest wheel I can put on a grinder and with my sharpening jig I can move the chisel/iron side to side to not only sharpen the full width of the edge, but to make the most of the width of the wheel.

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hydro

208 posts in 1219 days


#3 posted 10-02-2013 12:21 PM

I disagree with the wide wheel philosophy and normally use a ½” wheel for sharpening hardened steel tools. My reason is that I do not like to create heat to build up as I grind away the metal. A wide wheel has more surface area to watch as you grind, and that makes it difficult to stay ahead of heat buildup. I will slide the tool across the wheel, watching very carefully at the trailing edge since that is where the heat runs to.

The best wheels that I have found for rapid sharpening and heat control are either white or ruby aluminum oxide and in a friable grade from H to K. They are sharp, cut cleanly, and as such minimize heat buildup. Keep the grain size at 60-80, also to minimize heat. You are going to hone the tool afterwards anyway so why risk burning out the temper of the edge?

It may be a little tough to find these wheel specifications in the home store or wood working supply, but if you check metal supply houses they will know what you are asking for. They are very common in 7” surface grinding wheels, but in 6” diameter the choice is more limited.

-- Minnesota Woodworkers Guild, Past President, Lifetime member.

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Mrdouble

4 posts in 1383 days


#4 posted 10-02-2013 10:09 PM

Thanks for the replies. I think in just going to get the 3/4 Nortons

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