Spyder Benchstone Flatness

[Scandi Grind]

I've been looking at a fine Spyderco benchstone as a possible addition to my sharpening stable, but I am reading some reviews of people saying that they don't always come flat. Anyone have any experience with these benchstones?

[vivi]

I've owned three of their ceramic benchstones, one in each grit. no issues with flatness when new or after tons of use. they don't dish like other ceramic benchstones I've used from other brands. I've never needed to flatten mine. Maybe with enough use you'd need to.

I keep the fine in my knife roll at work for when I need to touch up my knives (chef). very quick and convenient stone to use as no water or flattening is required, just periodic cleaning.

[kerrcobra]

I have the Medium, Fine & Ultra Fine bench stones. None of them have any issues, and they are all perfectly flat. Also, to Vivi's point, they won't need resurfacing, because they won't dish. I have one of the doublestuff stones too, and it's flat as well.

[JD Spydo]

I've owned three of their ceramic benchstones, one in each grit. no issues with flatness when new or after tons of use. they don't dish like other ceramic benchstones I've used from other brands. I've never needed to flatten mine. Maybe with enough use you'd need to.

I keep the fine in my knife roll at work for when I need to touch up my knives (chef). very quick and convenient stone to use as no water or flattening is required, just periodic cleaning.

I've got 2 sets of the Spyderco 302 benchstones. I've never had any issues with them. And I consider them to be some of my better sharpening tools among the dozens that I own.

The only issue I ever had with any of my Spyderco sharpening tools I've ever bought was a set of the diamond stones for the 204 Sharpmaker. I bought them when they first came out around 2002 I think it was. The diamonds came loose at a rapid rate. So I took the defective stones directly to Sal at a knife show ( 2002 BLADE Show) and showed them to him. Spyderco immediately sent me a new set and I still have that set in one of my tool boxes.

But I've never had any problems with any of the ceramic stones at all. Now I did have a friend who bought one of the FINE benchstones a few years back and he said that it had small ripples on the surface. He sent it back to Spyderco and immediately got a replacement. And that's been over 15 years ago.

[vivi]

I've had the diamond rods for years, I wanna say I got them around 2012? I've reprofiled many knives, especially SE since I can't use my bench stones for those. They're still going strong, though I'm sure a fresh set would cut faster.

Planning to buy a new sharpmaker and CBN rods for myself from santa later this year

[aaronkb]

I have the ultra fine, I suck at deburring on coarse stones (it’s a “me” issue, I’m working on it) and find it extremely helpful. No issues at all.

[Roy C. Deps]

I have all three 302 benchstones. They are all flat, but not dead flat. Took my 302UF and put it on the table: It is possible to slide a thin piece of paper under one corner (maybe it is the table that is not flat? Who knows.).
For me this is not an issue. For my purposes they are all flat enough.