Lansky 120 grit better than 70 grit?

[y53p]

I’ve noticed the 70 grit stone dulls way quicker (I had to change it after just a couple weeks or so) and takes forever to get a burr on even the softer steels, while the 120 grit stone is way more durable, still have the original one from the set I got a couple months back, and puts a nice burr on a knife in just a few minutes.

Is it just me or are the 70 grit rods just not worth a dime?

 

[Obsessed with Edges]

Very coarse, inexpensive AlOx stones are always a toss-up as to how well they work. I noticed similar issues with the old Lansky 'Deluxe' kit I had, at least with the two coarsest hones in the set. That kit was purchased back in the 1990s. I noticed the coarser stones tended to glaze VERY fast, meaning the surface of the hone would become worn/polished and the cutting action essentially stopped, even on simpler steels. If you use the AlOx stones on very wear-resistant steels like S30V, etc., the glazing issues will happen even faster. I experienced issues with that, too.

When I was using that kit, I essentially solved my coarse-grit grinding issues by replacing it with the Lansky diamond set. Replacement hones can be purchased separately from Lansky, to replace the worn ones. But even as cheap as they are to replace ($10 or so), I felt it wasn't worth my time or $$ to replace the coarse AlOx hones with more of the same marginal-quality stones (presumably). So I upgraded to the diamond kit, and those concerns went away for good.

 

[y53p]

Very coarse, inexpensive AlOx stones are always a toss-up as to how well they work. I noticed similar issues with the old Lansky 'Deluxe' kit I had, at least with the two coarsest hones in the set. That kit was purchased back in the 1990s. I noticed the coarser stones tended to glaze VERY fast, meaning the surface of the hone would become worn/polished and the cutting action essentially stopped, even on simpler steels. If you use the AlOx stones on very wear-resistant steels like S30V, etc., the glazing issues will happen even faster. I experienced issues with that, too.

When I was using that kit, I essentially solved my coarse-grit grinding issues by replacing it with the Lansky diamond set. Replacement hones can be purchased separately from Lansky, to replace the worn ones. But even as cheap as they are to replace ($10 or so), I felt it wasn't worth my time or $$ to replace the coarse AlOx hones with more of the same marginal-quality stones (presumably). So I upgraded to the diamond kit, and those concerns went away for good.

I was thinking about getting the coarse diamond rod, probably will spare me some money in the long run. I've had no problem with the mid/high grit aio rods tho, do the high grit diamond ones do a better job/get a better finish on the knife or are they only just faster at getting material off it?

 

[Obsessed with Edges]

I was thinking about getting the coarse diamond rod, probably will spare me some money in the long run. I've had no problem with the mid/high grit aio rods tho, do the high grit diamond ones do a better job/get a better finish on the knife or are they only just faster at getting material off it?

Diamond will leave a coarser finish, even at the high end of the diamond hones' grit range. When I was using my Lansky diamond kit, I'd sometimes follow the Fine diamond with the medium AlOx hone and then finish with the ceramic hones (600/1000) from the original kit, if I was looking for higher polish or nearly so.

 

[y53p]

Diamond will leave a coarser finish, even at the high end of the diamond hones' grit range. When I was using my Lansky diamond kit, I'd sometimes follow the Fine diamond with the medium AlOx hone and then finish with the ceramic hones (600/1000) from the original kit, if I was looking for higher polish or nearly so.

Ok thank you for the advice