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Old 12-14-2016, 10:02 PM   #41
bazmak
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Drilling holes in a stone wheel is forboden so like your idea,however
my diamond wheel is mounted on a plastic/aluminium wheel so drilling
the wheel itself makes sense


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Old 12-15-2016, 12:32 AM   #42
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Found my *cough* Hi-Tek balance device - Long as the wheel was off- had to add a little weight . .



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Old 12-15-2016, 07:07 PM   #43
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Quote:
Originally Posted by Niels Abildgaard View Post
Some shops consider diamond wheel for HSS bad taste.
I learned toolgrinding from a guy who spent his entire carreer grinding tools in a woodworking factory . You know , the kind of guy with a grey dust coat , a butt of cigarette in his mouth , and a cup of coffee on the corner of the bench .

He thought me how to sharpen carbide sawblades , drill bits , endmills , wood cutters , knives .... And it all seemed so friggin easy when he demonstrated it

Back on topic :
This man told me never to use diamond wheels for carbon steel or hss .
Supposedly the carbon in the steel would do something to the diamond , wich is also carbon , and destroy it in no time .
I've always listened to his advice and use the diamond wheels exclusivly for carbide .

btw he also said never to breathe the carbide/diamond grinding dust .
Would be very dangerous . Don't know if it's true or not , but once again I carefully listened to his advice . Extraction unit ON , alway's !

Pat
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Old 12-15-2016, 10:00 PM   #44
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All very sound advice especially to someone who is grinding 8 hrs a day
5 days week for many years.However the advise can be tempered down
for the amount of grinding some of us do.So I will keep playing about
with the small amount I do.At the age of 70 I am not too worried about
developing diamondtosis.One point I would like to hear comments on
is the comment about the carbon in HSS destroying the diamond carbon
Anyone with technical knowledge please comment.If it is correct then what
sort of time scale ??.If its hrs then I am stuffed,if its years then not to worry
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Old 12-15-2016, 10:12 PM   #45
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Baz,
I'm not going into a long discourse of all our yesterdays.

Yesterday, I was watching 'How it's made' a Canadian program and watched a firm making end mills using diamond cutters and cooled with 'liquid'. I assume something water based. The machines were making HSS tools and carbides

Again, going back, I recall using a diamond tool grinder lubricated with oil. I was a 'manure' student at the local college.

Regards

Norm
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Old 12-16-2016, 06:53 AM   #46
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Hi Norman,dont think I will worry too much.Just spent a few hrs in the shed
but its warming up for xmas,hi 90s last few days.Couple more parcels from china.I now have 75,100 and 125mm dia diamond cup wheels and the 150x25
std wheel so made alum adaptors for all 3 and balanced the 150dia to a reasonable std.The grinder has a LH thread and RH on the other side which makes it difficult to tighten up the wheels,so first job was to set up in the mill
and machine a couple of flats each side for a spanner.Works a treat
After playing about with locations and heights etc on a board I decided to
mount the main wheel on the RH side and the 125 cup wheel to the LH
I made and fitted a baseplt for mounting the table on and a grinder mounting table from scrap 70mm rhs and 25x3 angle.Starting to look good but things will slow over Xmas,and a merry one to you all
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Old 12-16-2016, 08:56 AM   #47
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Hi Baz

My Christmas social events calendar( ?) has ground activities in the shed to a frightening halt.
Last year, it went into orbit with an invite to Hong Kong and onto Fiji.
Who knows what Monday will bring from my Chinese connections this time. Oz is only 17 hours away now.

Meantime, I'm enjoying your posts. So I wish you and the rest of the fora, my sincerest good wishes for the Christ's Mass and for a constructive New Year

Norm
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Old 12-16-2016, 10:15 AM   #48
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Hey Baz
Any chance you can give me a link for where you have got the diamond wheels from. I have a universal cutter grinder. I can get limited wheels from Hare and Forbes but a better assortment and perhaps better prices might be handy.
TIA

Cheers
Tom R
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Old 12-16-2016, 01:17 PM   #49
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Hi Tom,just search diamond cup wheel for grinding.They are very cheap on Ebay from china ave $15 each with free postage.I had to pay $80 for
the 6"x1" wheel.Only took 7 days
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Old 12-19-2016, 10:45 AM   #50
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Baz could you upload some pictures of the diamond wheels ?

Pat


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