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8 inch CBN grinding wheel

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Forum topic by loiblb posted 04-05-2017 02:38 PM 703 views 0 times favorited 12 replies Add to Favorites Watch
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loiblb

141 posts in 892 days


04-05-2017 02:38 PM

Where is a good place to buy the 8 inch CBN grinding wheels?
What grit combo works?

Thanks


12 replies so far

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Nubsnstubs

1207 posts in 1567 days


#1 posted 04-05-2017 03:27 PM

I have 80 and 180 grit. Came from Woodturners Wonders. Just yesterday I saw an ad through another site that WW’s has another model wheel offered. It looks like it would be better than the ones I got. It has the full 1 1/2” face, and also has a 1” flat grinding surface on the side of the wheel. It might be better because the first ones I got are “H” shaped in profile at about 3/8” thick with a 3/8 radius, leaving about a 1” grinding face. The grinding face also has developed a slight concave surface. Sharpening bowl gouges are not a problem, but any straight flat surface will have a slight curve to it if you don’t pay attention. Not good in my opinion, but must live with it.

D Way tools also has them…........ Jerry (in Tucson)

-- Jerry (in Tucson) www.woodturnerstools.com

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Wildwood

2186 posts in 1971 days


#2 posted 04-05-2017 03:37 PM

Think this is nice to know information regardless whatever brand grinder or CBN wheels you eventually buy.

https://www.youtube.com/watch?v=WDFGa9pxCgQ

I personally like 80 grit wheels for sharpening and 46 grit wheels to repair an edge or change bevel angles. So could get by with just an 80 grit wheel. Like he says in the video he cannot tell the differences between sharpening with 80 or 180 grit wheels. Having said that lot of turners prefer higher grit wheels.

Other than ensuring wheels will fit the grinder you have or buy not much too it. Definitely shop around for those that fit your budget.

-- Bill

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TheDane

5328 posts in 3500 days


#3 posted 04-05-2017 04:15 PM

I have 80 and 180 grit. Came from Woodturners Wonders.
http://lumberjocks.com/reviews/3742
https://woodturnerswonders.com/collections/cbn-wheels

-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"

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Rick_M

10628 posts in 2217 days


#4 posted 04-05-2017 06:18 PM

Does the 180 give an edge ready for turning or does it need to be touched up or stropped.

-- http://thewoodknack.blogspot.com/

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RobS888

2316 posts in 1682 days


#5 posted 04-05-2017 06:25 PM



Does the 180 give an edge ready for turning or does it need to be touched up or stropped.

- Rick M


My wife hones the edge before using.

-- I always suspected many gun nuts were afraid of something, just never thought popcorn was on the list.

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Wildwood

2186 posts in 1971 days


#6 posted 04-05-2017 07:30 PM

No it isn’t mandatory to strop or hone your tools no matter what grit or wheel material you use. If not careful you can actually dull the tool. I go from the grinder to turning except for my skews which do hone. I may do a touch up on a gouge before going back to the grinder.

Of course that is just MHO, and screwing up stropping & honing! Plenty of turners believe you must and others just feel right thing to do!

-- Bill

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TheDane

5328 posts in 3500 days


#7 posted 04-05-2017 10:00 PM

Does the 180 give an edge ready for turning or does it need to be touched up or stropped.

- Rick M

No need to hone gouges. I do hone skews and recently have begun honing scrapers (ala Alan Lacer).

-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"

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Rick_M

10628 posts in 2217 days


#8 posted 04-06-2017 12:11 AM

View loiblb's profile

loiblb

141 posts in 892 days


#9 posted 04-06-2017 01:15 AM

What speed grinder do I need for CNB wheels?
Low ,high or variable?
Thanks

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TheDane

5328 posts in 3500 days


#10 posted 04-06-2017 01:19 AM

What speed grinder do I need for CNB wheels?
Low ,high or variable?
Thanks

- loiblb

Slow speed (1725rpm) is usually recommended.

-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"

View Wildwood's profile

Wildwood

2186 posts in 1971 days


#11 posted 04-06-2017 01:19 PM

Buy a grinder locally but do stay away from Harbor Freight. I stay away from slow-fast, and variable speed discussion. I use a high speed grinder but many prefer the slower RPM’s or variable speed grinders and that’s okay! Buying locally, can exchange or get a refund if grinder a no go.

-- Bill

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TheDane

5328 posts in 3500 days


#12 posted 04-06-2017 01:27 PM

One more thought … make sure the grinder you select has the correct size arbor for the wheels you select. You want to avoid wheels that require an adapter to fit the grinder’s arbor.

My wheels (from Woodturners Wonders) are designed for a grinder with a 5/8” arbor.

-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"

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