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Diamond Stones 2

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Forum topic by AlaskaGuy posted 07-19-2017 07:52 PM 439 views 0 times favorited 10 replies Add to Favorites Watch
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AlaskaGuy

3633 posts in 2143 days


07-19-2017 07:52 PM

There a current “Diamond Stone” thread in progress. So I’ll post my question as not to hijack that one.

I have a diamond stone that I’ve had for many years. I don’t use it much because it not flat over the length (came that way new). I don’t know if this is a defect or maybe is a camber built into for some reason.
So I guess my question is “Are diamond stone suppose to be perfectly flat or not”?

You can see in the picture it takes 0.048 in of shim on the end to keep the straight edge from rocking.

-- Alaskan's for Global warming!


10 replies so far

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DrDirt

4407 posts in 3576 days


#1 posted 07-19-2017 07:55 PM

All the advertising seems to focus on how they start flat and never need to be flattened.

Don’t know what the ‘SPEC’ really is.
But My plates have no camber at all.

-- “The two most important days in your life are the day you are born and the day you find out why.” Mark Twain

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Loren

9606 posts in 3481 days


#2 posted 07-19-2017 07:55 PM

I think mine are flat. They are EZE-lap.

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scr5008

24 posts in 821 days


#3 posted 07-19-2017 08:00 PM

Does the rule have a gap only in the end where that shim is?

It looks like it’s far enough to the end of the stone that it wont matter much, if at all.

To each their own, but in my shop that would be considered as flat and overlooked. Good enough for the gals I go out with!

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AlaskaGuy

3633 posts in 2143 days


#4 posted 07-19-2017 08:06 PM



Does the rule have a gap only in the end where that shim is?

It looks like it s far enough to the end of the stone that it wont matter much, if at all.

To each their own, but in my shop that would be considered as flat and overlooked. Good enough for the gals I go out with!

- scr5008

If I take the shims out then it rocks back and forth from the middle of the stone. If you sight down the edge you can see that is a slight consistent curve the whole length.

-- Alaskan's for Global warming!

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TaySC

270 posts in 167 days


#5 posted 07-19-2017 08:14 PM

https://youtu.be/zBND6emsSE4

StumpyNubs discusses the flatness at about the 4 minute mark of the above video.

I’m just getting into woodworking and haven’t used one yet, but find this subject interesting.

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AlaskaGuy

3633 posts in 2143 days


#6 posted 07-19-2017 08:27 PM



https://youtu.be/zBND6emsSE4

StumpyNubs discusses the flatness at about the 4 minute mark of the above video.

I m just getting into woodworking and haven t used one yet, but find this subject interesting.

- TaySC

Thank you

-- Alaskan's for Global warming!

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scr5008

24 posts in 821 days


#7 posted 07-19-2017 08:33 PM


Does the rule have a gap only in the end where that shim is?

It looks like it s far enough to the end of the stone that it wont matter much, if at all.

To each their own, but in my shop that would be considered as flat and overlooked. Good enough for the gals I go out with!

- scr5008
If I take the shims out then it rocks back and forth from the middle of the stone. If you sight down the edge you can see that is a slight consistent curve the whole length.

- AlaskaGuy

Makes sense – Diamond stones should be flat and stay flat. Looks like a QC issue or just a lower quality one. If it’s too out of flat for you, might be time to upgrade.

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MrRon

4491 posts in 3077 days


#8 posted 07-19-2017 10:48 PM

I have an EZE-lap stone. I have never checked it to be flat. Diamond stones were developed, I believe, for general sharpening of knives. Flatness is not really necessary for sharpening knives.

View TheFridge's profile

TheFridge

8287 posts in 1320 days


#9 posted 07-20-2017 04:50 AM

I have a 2×6 ezelap. It’s twisted. Not much. I only discovered it when I went to one over the backs of a set of LN chisels (5 or 6) and the pattern came out the same. Top right and bottom left touched first. Had to re lap with granite and sandpaper.

I still like the warped ezelap better than the dmts I’ve had.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

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HokieKen

4505 posts in 972 days


#10 posted 07-20-2017 12:18 PM

I have Norton, DMT and ez-lap and all are very flat. Mine are all old, bought in an auction lot at an estate sale. I recently ordered a new EZ lap and it was obscenely bent. Sent it back immediately. So, yes, they should be flat but no, they’re not always.

How flat do you need it? I think that depends on what you’re sharpening and your method. Like MrRon says, something like a knife it doesn’t matter. But, like Fridge points out, it can wear an uneven bevel on a chisel.

-- Kenny, SW VA, Go Hokies!!!

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