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engineerd3d
04-27-2018, 12:43 AM
Well I finally mounted a diamond wheel on my surface grinder.

Just like everything worth while it is not easy. Sometimes you make a bozo move, like I did ordering a 100mm wheel with a 20mm bore.... Other times its something else. THe reality is that my grinder needs a 6-7" wheel, 150-180mm for our metric friends. The grinder also uses standard hubs that are 1 1/4" which puts them in the 32mm territory.

With all of the above said, I mounted the wheel on my 4 jaw, indicated it to better than 1/2 thou and went to town boring the soft aluminum center to be basicaly a slide fit on the hub, which is actually much better than norton does with their wheels.

This is the result, the stone is smooth as silk. The 600 grit side is actually smoother to the touch than the 1000 grit side, but not closed. I will spend some time truing this stone up and then I will pick up a set of stones to make a matched pair.

http://bbs.homeshopmachinist.net/attachment.php?attachmentid=2773&d=1524801196

This is the wheel. Looks tiny on my grinder and indeed it is. It only sticks out about 1/2" or maybe 3/4" from the bottom.
http://bbs.homeshopmachinist.net/attachment.php?attachmentid=2771&d=1524801183

This is the not ground up side. I am using paper to create a 3 foot kinematic for the stones FYI. (Saw renzetti do this)
http://bbs.homeshopmachinist.net/attachment.php?attachmentid=2772&d=1524801189

I have to say that the stone does feel like it is gliding on the chuck vs before it felt like it was eating the chuck up. I will experiment some more and have some ideas. I also have to figure out a proper way to dress the diamond wheel. I have ideas for that too.

And if your not sick of my typing and want to see a short video about the subject. Here you go.

https://www.youtube.com/watch?v=6PI9RxWyZ0o

engineerd3d
04-29-2018, 08:08 PM
So I am trying to dress the diamond wheel. I am using a chunk of steel to do this. The old method of soon the wheel up cut power and use a chunk of steel to dress the wheel by trying to stop it asap. Any ideas on how to do this in a less dangerous way?

metalmagpie
04-29-2018, 11:51 PM
Did you use coolant when you ground that stone?

engineerd3d
04-30-2018, 12:03 AM
Did you use coolant when you ground that stone?

No coolant. I was contemplating coolant.

old mart
04-30-2018, 02:10 PM
What do you intend using the diamond for?

engineerd3d
05-01-2018, 01:58 AM
What do you intend using the diamond for?

The diamond wheel I intend on using it for grinding stones in to make tool room stones. I also intend on using it to regrind carbide tooling and inserts.

old mart
05-01-2018, 07:58 AM
Check out tlfamm's current thread on metal powder dangers published in a new book.

engineerd3d
05-01-2018, 05:36 PM
I am still learning here. I did notice that while grinding steel I was igniting some of the powder in a slow burn reaction. I think my glass res dust separator is going to be something I have to keep an eye on.

rkepler
05-02-2018, 05:42 PM
I have to say that the stone does feel like it is gliding on the chuck vs before it felt like it was eating the chuck up. I will experiment some more and have some ideas. I also have to figure out a proper way to dress the diamond wheel. I have ideas for that too.

It takes a brake dresser, here's one on eBay:

https://www.ebay.com/sch/i.html?_from=R40&_nkw=281755819178

and a more permanent link to one:

http://www.bgsusa.com/truinganddressingdiamondandcbnwheels.htm

dian
05-03-2018, 02:11 AM
"I have to say that the stone does feel like it is gliding on the chuck vs before it felt like it was eating the chuck up."

well, the diamond cut off the tops of the gritt, now there is nothing to grind with. i always wondered what the merit is of this procedure.

engineerd3d
05-03-2018, 09:51 AM
"I have to say that the stone does feel like it is gliding on the chuck vs before it felt like it was eating the chuck up."

well, the diamond cut off the tops of the gritt, now there is nothing to grind with. i always wondered what the merit is of this procedure.

That's not exactly true. It does cut but seems to not dig in. It seems to actually act like gillutine on high spots, but does not seem to cut flat surfaces.

alanganes
05-03-2018, 01:20 PM
That's not exactly true. It does cut but seems to not dig in. It seems to actually act like gillutine on high spots, but does not seem to cut flat surfaces.

As I understand things, that is exactly the idea. The surface of the grains on the stone are so flat and even with one-another that unless they encounter a high spot on the surface you are stoning they do not have enough pressure in any one small spot to remove any material. So they will only remove small dings, burrs, or other high spots. That way you will not remove any material from a surface that is already flat, so you can do something like run it over the surface of a gauge block and take off any raised imperfections without risking changing the dimensions of the block.