Blotters on Diamond Grinding Wheels

[Brian HParticipant @brianh50089]

[Brian HParticipant @brianh50089]

I think the answer to my question is NO, you don't need blotters on diamond wheels, the ones made from aluminium with a diamond coating, but does anyone know differently?

Brian

[Chris Evans 6Participant @chrisevans6]

I don't know the official answer but I never use them on aluminium diamond wheels.

[Neil WyattModerator @neilwyatt]

No, the blotters are to make sure you don't have any stressed points on a bonded wheel.

[mechman48Participant @mechman48]

Posted by Neil Wyatt on 22/12/2017 19:10:34:

No, the blotters are to make sure you don't have any stressed points on a bonded wheel.

​+1 , Also provides a means of identifying what type, rpm, abrasive, grain, grade, structure & bond etc. that the wheel consists of.

George.

[Simon Williams 3Participant @simonwilliams3]

It's a long time since I did the course, so I've been looking at the HSE Guidelines which have superseded the Abrasive Wheels Reg's under PUWER, and a "plate mounted wheel" is one of the specific exemptions from the use of blotters.

If I've understood the description, a plate mounted wheel is one where the abrasive grains are bonded to a backing plate, and the drive clamping force acts on the plate and not on the abrasive. That seems to describe a bonded diamond wheel pretty much spot on.

Common sense says that a blotter doesn't add anything to the mounting security of this type of wheel, so hopefully I'm reading this right.

[Brian HParticipant @brianh50089]

Many thanks all, for the answers, I'll ignore the blotters on aluminium backed wheels.

Brian

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