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Grinding wheel 'washers'

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Cornish Jack07/10/2019 19:50:26
1122 forum posts
159 photos

I have a Tiplap grinder with two original Boremaster wheels. They aren't really suitable for general grinding, so I am fitting a carborundum cup wheel . I have made a new mounting adaptor but I am unsure about the type of 'washer' to fit on either side. I have cut our a couple from the cardboard of a tool package. Is this appropriate or should they be made from something less 'agricultural?

TIA

rgds

Bill

John Reese07/10/2019 19:53:58
842 forum posts

I cut my "blotters" from the cardboard back of a writing tablet.

old mart07/10/2019 20:37:00
1768 forum posts
138 photos

The cardboard from a cereal packet or slightly thicker would be fine, you could cut a stock and change them every time a wheel is changed. As you are obviously aware of the importance of the soft interface, there is nothing more to say.

Cornish Jack07/10/2019 21:00:02
1122 forum posts
159 photos

John and Old Mart - thank you. Both your suggestions are much less 'spongy than the card I have - no writing tablet and no cereal packet . I have a nagging feeling that what I have produced is not ideal! I shall have to search further.

rgds

Bill

Grindstone Cowboy07/10/2019 21:55:38
300 forum posts
27 photos

If yours are a bit thin, just double them up. I have also seen vinyl flooring used - the spongy sort - but not entirely convinced this is 'right'.

Baz07/10/2019 22:02:27
381 forum posts

Use your favourite cereal packet, makes excellent washers, not convinced that vinyl flooring is suitable though.

Nicholas Farr07/10/2019 23:09:55
avatar
2262 forum posts
1099 photos

Hi Bill, or just get some Blotting Paper

Regards Nick.

P.S. there are others available, the link is just an example.

Edited By Nicholas Farr on 07/10/2019 23:13:45

ega07/10/2019 23:44:35
1713 forum posts
150 photos

Unless your flanges are rustproof I suggest you make the blotters from something that won't harbour moisture.

Joseph Noci 108/10/2019 06:46:13
671 forum posts
890 photos

Thin Gasket sheet from your local motor-spares supply works very well - I use around 0.6mm material. In my town, around £3 for a half square meter. Use the rest on your model engines..

Joe

mechman4808/10/2019 08:53:48
avatar
2663 forum posts
410 photos

Any of the above are deemed suitable; they are to allow for slight imperfections on the outer faces of the wheels & equalise the loading of the metal discs. As with all grinding wheels; apart from resin bonded type give them a 'ring test' with any non metallic tool, screwdriver handle, small hammer shaft etc, if it rings your good to go, if a dull sound, bin it, as it will have a crack/damage somewhere.

George.

Martin Kyte08/10/2019 08:54:11
avatar
1842 forum posts
33 photos

As I understand it what you are trying to acheive by interposing 'soft pads' between the clamp washer and nut and the wheel is the avoidance of local stress on the wheel caused by it's rough surface. basically something to conform to the surface and fill all the gaps. So still enough to hold firmly buut soft enough to give a little to spread the load.

Pretty much all the materials that have been suggested above fit the bill.

regards Martin

Cornish Jack08/10/2019 09:12:32
1122 forum posts
159 photos

Thank you all again.

From all the advice given, I'm concerned about the compressiblity of the cardboard I had intended to use. As I said, it's just a standard piece of a cardboard box and doesn't have the less compressible qualities of e.g. gasket material - maybe I'm over-worrying!

rgds

Bill

Michael Gilligan08/10/2019 10:02:57
avatar
15713 forum posts
687 photos

The elfin folk have very kindly provided this, free to download: **LINK**

https://www.hse.gov.uk/pUbns/priced/hsg17.pdf

It’s an excellent little document, and p19 is particularly relevant.

MichaelG.

Pete Rimmer08/10/2019 14:07:35
716 forum posts
49 photos
Posted by Cornish Jack on 08/10/2019 09:12:32:

Thank you all again.

From all the advice given, I'm concerned about the compressiblity of the cardboard I had intended to use. As I said, it's just a standard piece of a cardboard box and doesn't have the less compressible qualities of e.g. gasket material - maybe I'm over-worrying!

rgds

Bill

I think you are Bill. All of the wheels I have in my workshop have simple paper blotters. Not much give in them at all.

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