More working with jointer stones (vid)

HeavyHanded

HeavyHanded

Joined
Jun 4, 2010
Messages
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Hello, am still on a kick with these and as a follow up to the other video where I do a lot of cosmetic work, this is strictly edge work on a D2 BK24, done fairly quickly. In this one instead of working up a lot of mud, am using as simply as possible.

For anyone interested, these are the stones I show, available from Global Tooling. As I mention in the video, the grit rating doesn't correspond very well to the actual abrasive size, am not sure what scale is being used.

COARSE:
8" x 2" x 3/4" - 240 grit / BLUE-GREY
Part # JS-0500 - 39C 240-J,K,L,NV - Norton Stone [Specify Hardness wanted] (NV is the hardest and what I use)

MEDIUM:
230mm x 60mm x 15mm - 500 grit / DARK BROWN
Part # JS-2121 - SC5AC 500 Euro-Stone - Resin Bond

FINE:
228mm x 60mm x 17mm - 1200 - 600 grit / DARK BROWN
Part # JS-0701 - NCD 1200/600 Diamond Stone - For CARBIDE ONLY (Presumably only for carbide because it is intended to be used at 3600-6000 RPM, being diamond - no good for HSS blades)


[video=youtube;R39wv301PLw]https://www.youtube.com/watch?v=R39wv301PLw[/video]
 
Martin - thanks for making this useful & nicely-done video :thumbup: I am quite interested in diamond stone; too bad the 120 grit diamond/cbn stone are round.
 
bluntcut said:
Martin - thanks for making this useful & nicely-done video :thumbup: I am quite interested in diamond stone; too bad the 120 grit diamond/cbn stone are round.
Click to expand...

Thanks for watching!
I'm still getting used to this stone and in some respects still learning the SiC stone I've had for quite some time now. The diamond one seems to have a much shorter learning curve. Already I am able to treetop armhair off the stone, and have only been using it for a week or so. For about $30 you would be hard-pressed to find anything else like it.

There are a ton of these one can buy at varying harnesses, binder materials, abrasives, and grit values, but the literature is scant and I cannot imagine where one could go to handle any of them before buying.
 
umm my googfool morning brain need help, where (search phrases) could I find resin-bonded diamond/cbn sharpening stones with more grit choices? Specifically I need a 120 grit 10x3x1" diamond water/oil-stone.

HeavyHanded said:
Thanks for watching!
I'm still getting used to this stone and in some respects still learning the SiC stone I've had for quite some time now. The diamond one seems to have a much shorter learning curve. Already I am able to treetop armhair off the stone, and have only been using it for a week or so. For about $30 you would be hard-pressed to find anything else like it.

There are a ton of these one can buy at varying harnesses, binder materials, abrasives, and grit values, but the literature is scant and I cannot imagine where one could go to handle any of them before buying.
Click to expand...

Edit: I just ordered the 600-1200 grit resin diamond stone.
 
Last edited:
bluntcut said:
umm my googfool morning brain need help, where (search phrases) could I find resin-bonded diamond/cbn sharpening stones with more grit choices? Specifically I need a 120 grit 10x3x1" diamond water/oil-stone.

Edit: I just ordered the 600-1200 grit resin diamond stone.
Click to expand...


You will have to do exhaustive searches of all possible vendors. I cannot find the one link I discovered to an outlet that claimed a "wide variety of hardness and grit sizes" for what were described as orange jointer stones and I believe they may have all been CBN in a resin bond. I cannot find it again, and am leery of buying these stones blindly, have bought 5 and only 3 have really panned out. One was OK and one was entirely unsuitable for hand sharpening though it did make a nice surface polish.

Since these aren't intended to be used in a progression, is difficult to find exactly what you're looking for. I don't think you will find a working sized stone in diamond grit that large, no one would dare use it on a carbide blade at 6000 rpm. You might find wheels in CBN large enough to work with, but a resin bonded one will be a tough find - let me know if you are successful!
 
Thanks for putting this all together and sharing this with us - once again great info Martin! Keep the good work up!!
 
awestib said:
Thanks for putting this all together and sharing this with us - once again great info Martin! Keep the good work up!!
Click to expand...

Thanks for watching!
If you try enough stuff, you will get lucky every now and then...

It is a fascination of mine how many combinations of backing, mobility, abrasive etc there can be and how they all effect the way the mineral cuts into the steel. One of these days I'll make a phone call and try to get someone on the horn that knows these stones better than I and can maybe help me navigate the options a bit more reliably. That said, I'm real happy with this latest and the other ones I already own.
 
Martin,

Nice experiment! It seems the possible combination never ends, I won't have enough time to try them all, well, perhaps through people like you, David, Jason, bluntcut, Andy, etc.

Always entertaining & educational! :thumbup:
 
I received the diamond stone on Saturday. It's a decently hard stone. Abrasive density is sparse but sufficient to yield good 1-3um edge. Quite easy to glaze over after pro long use dry with light pressure. Extra pressure to mud up, hence renew the surface with fresh sharp diamond. I highly recommend this stone for high alloy knives sharpening. I got great result for D2, S30V, S90v, 52100, 1095, CruV, etc..

I hope they will make/offer this type of stone in grit um size: 300, 200, 100, 50, 25, 10, 3, 1, 0.5, 0.25, 0.1 -- heheh I buy/bite them all.
 
bluntcut said:
I received the diamond stone on Saturday. It's a decently hard stone. Abrasive density is sparse but sufficient to yield good 1-3um edge. Quite easy to glaze over after pro long use dry with light pressure. Extra pressure to mud up, hence renew the surface with fresh sharp diamond. I highly recommend this stone for high alloy knives sharpening. I got great result for D2, S30V, S90v, 52100, 1095, CruV, etc..

I hope they will make/offer this type of stone in grit um size: 300, 200, 100, 50, 25, 10, 3, 1, 0.5, 0.25, 0.1 -- heheh I buy/bite them all.
Click to expand...

So far it has worked very well with everything I've tested on as well. Mudding it up is a great stone for Scandi, used dry as demo'd in the video is great for V bevel. The reclaimed mud on paper is a very strong performing stropping compound.

If they made one in a lower grit I'd be pretty happy too. Actually, the more I use the other two stones the more I like the set I've built. Am glad this one is working for you!

Martin
 
DaveDM said:
The video link is down and the video is not available in your channel and either. Could you please share it again?
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That video has been deleted, very sorry! Am planning on making another fairly soon demo'ing the diamond jointer stone, but don't have any in my library currently.

My recommendation for that stone is to boil it before use and just use it with water - soak as long as you want.
It cannot do much work but is a good finishing stone. I also have a small piece I cut off and use an old hacksaw blade to shave off dust - applied over regular crayon type compound or by itself on a sheet of paper with a drop of oil it makes a great strop compound.
 
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