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Diamond stones and honing guides

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Forum topic by beater posted 08-02-2018 02:16 PM 848 views 0 times favorited 14 replies Add to Favorites Watch
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beater

5 posts in 451 days


08-02-2018 02:16 PM

I have always used a Veritas honing guide for chisels and plane irons on my water stones. A while back I purchased a DMT diamond plate. I noticed the grit broke down very quickly. I purchased another one and had the same thing happen. I’m thinking the roller on the guide is causing the diamond grit to separate from the plate. I can’t imagine that it is crushing the diamonds.

Has anyone else had a similar experience?

Tim


14 replies so far

View waho6o9's profile

waho6o9

8773 posts in 3091 days


#1 posted 08-02-2018 02:22 PM

That’s why I now use Atoma diamond plates, DMT’s are weak.

View bilyo's profile

bilyo

858 posts in 1617 days


#2 posted 08-02-2018 02:35 PM

I have used one of these for many years. It does not ride on the stone. The disadvantage is that it has to be readjusted each time you change to a stone of different thickness. Otherwise, it works great with no damage to the stone.

View Bill_Steele's profile

Bill_Steele

574 posts in 2246 days


#3 posted 08-02-2018 02:44 PM

I have DMT plates and I use a Veritas guide with them—but I have not noticed a problem. How did you determine that the grit has broken down? When I compare all of the DMT plates I have there is a very subtle difference in smoothness when I rub my finger across them.

I have 5 DMT plates going from extra course to a extra extra fine and they all work. I bought the course stones if I get a nick or need to remove more material. The higher grit stones (extra fine and extra extra fine) work well for honing but not so well when you need to remove alot of material.

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beater

5 posts in 451 days


#4 posted 08-02-2018 03:21 PM

I use the same honing guide as you. When I run my finger over the plate it is smooth in the middle and has some patches mainly near the edges where I can feel the grit. I have the two sided plates (green on one side and blue on the other) and both sides of both of my plates are the same.

View Bill_Steele's profile

Bill_Steele

574 posts in 2246 days


#5 posted 08-02-2018 07:00 PM

Hmmm….I have single sided plates—these I think.

I was just reading that if you use alot of pressure when sharpening that you can prematurely wear out the diamond plates—- in essence you scrape the abrasive out of the nickel substrate of the plate. I read something else that seems to indicate that the build-up of swarf can inhibit sharpening.

I find it difficult to feel the abrasiveness (with my finger) of the plates from medium all the way up to extra extra fine (which feels very smooth). It would be nice if these plates would give you a visual indicator when they are worn out—maybe change color like the toothbrush that does this. I guess I’ll have to rely on results I’m getting to tell me if they are wearing out.

View OpensideFlanker's profile

OpensideFlanker

14 posts in 822 days


#6 posted 08-02-2018 07:41 PM

All diamond plates “wear in” early in their use cycle. It is really only palpably noticeable on the coarser stones but you can hear the difference on all of them. The manufacturer notes this and says that it is to be expected and not to be considered deterioration of the working of the stone. I have found the same thing freehand sharpening, particularly with the extra coarse stones, but they still work a treat for heavy reshaping. I wouldn’t attribute it to the jig roller (which should REALLY take a beating up against diamond particles) and would leave it up to you as to whether the “worn” stones are working satisfactorily.

View Tony1212's profile

Tony1212

361 posts in 2249 days


#7 posted 08-03-2018 01:00 PM

I bought the 8” DMT DiaSharp Stones in Course, Fine and Extra Fine (just like Paul Sellers) a few years ago.

I’m more of a power tool user, so I don’t sharpen as often as some people, but I have noticed that my Course stone doesn’t cut as fast as it used to. It still cuts faster than the Fine, so I haven’t felt the need to replace it.

For me, it’s probably a good thing since it prevents me from taking off too much metal. In the past, I’ve used sandpaper if I needed something coarser, but I just picked up the Jet clone of the Tormek for $40. I haven’t tried that one yet, but I’m looking forward to it.

Also, I made a sharpening system using the diamond stones that doesn’t rely on honing guides. In fact, nothing touches the stone other than what is being sharpened.
Lumberjocks Project
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-- Tony, SW Chicago Suburbs

View dca's profile

dca

28 posts in 539 days


#8 posted 08-03-2018 01:53 PM

It’s the stone not the roller. Waho6o9 is correct – get the Atoma if you want a diamond. DMT’s have poor QC.

View TheFridge's profile

TheFridge

10859 posts in 2000 days


#9 posted 08-03-2018 04:50 PM

I’ve had issues with DMT. I have atomas I use more and am very happy.

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

View BenjaminButton1984's profile

BenjaminButton1984

5 posts in 575 days


#10 posted 08-03-2018 06:50 PM

Does anyone have experience with Shapton stones?

View Lemwise's profile

Lemwise

91 posts in 1131 days


#11 posted 08-04-2018 12:04 AM

I used to have the Shapton glass 3000. Very hard, very fast but with very little feedback. I’m currently playing around with the Shapton pro 1000. It’s the best coarse stone I’ve ever used. It’s very fast, hardly dishes and the feedback is great. And to top it off, it’s just €25 on Yahoo auctions.

As for diamond plates, it’s Atoma or nothing for me. Especially a worn in 1200 is a treat to use.

View TheFridge's profile

TheFridge

10859 posts in 2000 days


#12 posted 08-04-2018 01:40 AM

I have shapton pros. 1k 5k 8k. There is a fine line with too much/not enough water. When you figure it out the metal will fly off. I hear the sigmas are better but I enjoy using the shaptons. Very happy.

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

View pontic's profile

pontic

697 posts in 1123 days


#13 posted 08-04-2018 02:24 AM

Atomas are what I use. The only downside to them is that THE INSTRUCTIONS ARE ALL IN JAPANESE!

-- Illigitimii non carburundum sum

View tacky68's profile

tacky68

89 posts in 1941 days


#14 posted 08-04-2018 04:47 AM

Thank you Wahoo, Fridge, and Pontic. I have the DMT Dia-sharp extra coarse through ex ex fine 220-8000 (6 total)
and like Fridge stated , seemingly having issues. The 8000 just does not seem very sharp to me. I have had them
for 2.5 years, and do not get a lot of use. My chisels (same ones) seemed a LOT sharper when the stones were
new. I thought it was just me. I will look into the Atoma’s. Thanks again.

Tim.

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