I normally use sandpaper on glaas for sharpening my chisels and handplanes.. I recently bought some diamond grit paste from LV no 6 micron which wouild compare I think to a coarse grit in sandpaper. I have tried using a cast TS surface and on a piece of maple. I am not getting the expected results when compared to sandpaper, seeminly not half as fast. Is this normal?
As far as I know #6 micron is still quite fine particle size - lee valley lists it as comparable to hard black arkansas, or a norton #4000 water stone. Those would be intermediate/fine stones, and not for coarse metal removal.
I have a norton SiC stone, (coarse and fine) for my basic edge shaping, moving up to a 1000 water stone, and I finish at 4000. Able to shave with the edge at 4000. If I need the edge "sticky sharp" I will use green compound.
Enco is a pretty good place to deal with. I do some metal working as a hobby and also maintain my woodworking equipment. I originally bought the diamond paste/grease to lap metal - but started to use it for honing/stropping my knives.
I have the green, red and brown from Enco. They supplement the much finer grits from LV well. The syringes give you quite a bit and I have had the same ones for 10 years now. You use such a small amount.
Andrew J. Coholic Joe Coholic Custom Furniture Ltd.