CBN grinding wheels

[Rik ShawParticipant @rikshaw]

Only in the last couple of days have I been made aware by EGA in another thread of the existence of these types of grinding wheels. My brief searches seem to indicate that these wheels are mainly used for sharpening wood working tools. Is this the case or is there a use for them in the engineering workshop?

Rik

[Rik ShawParticipant @rikshaw]

[JasonBModerator @jasonb]

If you have one of Arc's EMG-12 machines then they use CBN wheels so yes there is a use for them and I'm sure they will be just as good for grinding HSS lathetools as HSS turning chisels

[KWILParticipant @kwil]

Rik,

CBN (cubic boron nitride) certainly has uses well beyond wood working tools. The professional (ie industrial) tool resharpening company that I use certainly uses a lot of this type of "stone" on their machines.

Try this

**LINK**

[Roderick JenkinsParticipant @roderickjenkins93242]

KWIL,

That's a good link, thanks. Intrinsically, CBN wheels should be safer than the ceramic wheels since the aluminium base won't fracture and burst.

The issue of diamond interacting with steel is well known but it is still convenient to use the sort of diamond wheels that ARC sell on our T&C grinders for touching up HSS milling cutters. Presumably these have a short life but that doesn't seem to be an issue for amateur use. I wonder if similar economic wheels in CBN will become available?

Rod

[egaParticipant @ega]

Rik Shaw:

I'm glad to have put you on to these. There is some information here but I don't know if they can supply currently:

http://www.peterchild.co.uk/grind/aboutcbn.htm

From my limited experience I would say that CBN wheels cut markedly faster, cooler and with less mess than conventional bonded abrasive wheels. They just need to come down in price and be available in a range of styles and sizes to suit the amateur. Incidentally, the wheel I have is steel rather than aluminium.

[John Stevenson 1Participant @johnstevenson1]

Posted by Roderick Jenkins on 22/02/2016 10:33:25:

KWIL,

That's a good link, thanks. Intrinsically, CBN wheels should be safer than the ceramic wheels since the aluminium base won't fracture and burst.

The issue of diamond interacting with steel is well known but it is still convenient to use the sort of diamond wheels that ARC sell on our T&C grinders for touching up HSS milling cutters. Presumably these have a short life but that doesn't seem to be an issue for amateur use. I wonder if similar economic wheels in CBN will become available?

Rod

.

I have one of the ARC diamond wheels on one of the Deckel clone type grinders plus a free hand grinder. Both are 8+ years old, in regular use and grind HSS, carbide, pencils and finger nails.

So far neither has worn out.

[Bruce EdneyParticipant @bruceedney59949]

Gary from Eccentric Engineering has one on his grinder. Have a look at his Acute sharpening system video

[John HaineParticipant @johnhaine32865]

These are excellent. Peter Child unfortunately no longer stocks them but they are available from

**LINK**

Also from Axminster. The ones from the first have one face partially coated which makes them more versatile.

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