I like many other have seen a video on utube of robin renzetti “I think” grind stones on his surface grinder and I knew I needed a set. I have a surface grinder but I do not have the combs or hold down plates that are required to hold material of this kind.
I had purchased a bunch of diamond plates to touch up carbide and such. Why not use the plates to surface the stones???
So I made a nice little fixture to hold the plate and support it.
The plates are 3x6 I recessed it into the wood and then recessed two magnets into the wood to hold them in place while using. The plates sits proud of the wood surface.
Then for storing the rest of them. I built the holder from two pcs. of 3/4. So the top pc. I routed a 3/8 void in the bottom. Then the bottom pc I routed a 1/2 void in the top. So when glued together it has a sizable pocket in the side to store the other grits.
Back to the stones. I have a variety stones for deburring and such. So I took one that had some worn areas and all loaded up with material. I started with a 200grit plate squirted a little wd on the plate for lube and ran the stone across with even pressure for about 20 strokes. Flipped and you could see how it was leveling the stone out. Once I got full coverage with the 200 I jumped up to 600 gave it acouple strokes then finished with 1000 I think.
I honestly don’t know how the stones robin did are but I can imagine their perfect. That guys knowledge and attention to details is supreme. But the stones I did perform just like how his video showed. No scratching of the surface it just exposes the high spots and takes them down with light pressure.
Until I make the hold down combs this process seems to work very well. The plates were bought on amazon for acouple bucks a pc. I ended up getting from 200up to 2000 which is like paper smooth but was well worth the money even before I found this out. I recommend if your in the market for some great stones this method works good and diamond laps are great to have anyway.
I had purchased a bunch of diamond plates to touch up carbide and such. Why not use the plates to surface the stones???
So I made a nice little fixture to hold the plate and support it.
The plates are 3x6 I recessed it into the wood and then recessed two magnets into the wood to hold them in place while using. The plates sits proud of the wood surface.
Then for storing the rest of them. I built the holder from two pcs. of 3/4. So the top pc. I routed a 3/8 void in the bottom. Then the bottom pc I routed a 1/2 void in the top. So when glued together it has a sizable pocket in the side to store the other grits.
Back to the stones. I have a variety stones for deburring and such. So I took one that had some worn areas and all loaded up with material. I started with a 200grit plate squirted a little wd on the plate for lube and ran the stone across with even pressure for about 20 strokes. Flipped and you could see how it was leveling the stone out. Once I got full coverage with the 200 I jumped up to 600 gave it acouple strokes then finished with 1000 I think.
I honestly don’t know how the stones robin did are but I can imagine their perfect. That guys knowledge and attention to details is supreme. But the stones I did perform just like how his video showed. No scratching of the surface it just exposes the high spots and takes them down with light pressure.
Until I make the hold down combs this process seems to work very well. The plates were bought on amazon for acouple bucks a pc. I ended up getting from 200up to 2000 which is like paper smooth but was well worth the money even before I found this out. I recommend if your in the market for some great stones this method works good and diamond laps are great to have anyway.
. These are rigid too but recommend a backer for the most rigidity. 
