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DMT Diamond stone

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Forum topic by moke posted 09-21-2017 05:27 PM 630 views 0 times favorited 20 replies Add to Favorites Watch
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moke

1007 posts in 2557 days


09-21-2017 05:27 PM

I bought a couple DMT style diamond stones ( although I don’t know why they are called stones as they are metal ) and I have been sharpening my skews, some knives and various other things. I bought them about 9 months ago, thye instructions say that they will continue to expose new “diamonds” and will last a long time. The middle of the 1200 stone clearly is almost smooth. I used 3 in 1 oil as a lube for about 6 of those 9 months, then I began to use lapping fluid after watching a you tube video. I do use multiple times a week….I love the edges I get, even as opposed to grinding, but it now, of course takes longer. Is it normal to have this wear out so fast, or is it truly worn out?
Thanks
Mike


20 replies so far

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hotbyte

987 posts in 2756 days


#1 posted 09-21-2017 06:16 PM

Might need cleaning

View HokieKen's profile

HokieKen

4303 posts in 919 days


#2 posted 09-21-2017 06:18 PM

Well Mike, I have to wonder…


I bought a couple DMT style diamond stones
- moke

You can get diamond plates in a variety of qualities. DMT, EZ Lap and other recognize makers will be of better quality than the ones from Harbor Freight or chinese ones on eBay. I’m not saying you have to buy the expensive ones to get a good edge. But, the cheap ones basically “glue” diamonds to the metal substrate while better ones are made using a nickel electroplate bond.

So, if your stones are cheaper, it may be that they only last for 8 months. If they’re good stones, they should last MUCH longer. Like a lifetime for a weekend warrior hobbyist. It’s also possible that your stone is just clogged. Have you cleaned it with a brush and mild abrasive? Those are my initial thoughts. Hope it helps!

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

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waho6o9

7981 posts in 2357 days


#3 posted 09-21-2017 06:27 PM

I had the same results with my DMTs, they’re a joke whereas Atoma plates are the

real deal.

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moke

1007 posts in 2557 days


#4 posted 09-21-2017 07:10 PM

I really don’t remember the brand, and I can’t find the wrapper that I always save, but I got them at the wood smith store….the same people that have the wood working show on PBS. I paid around 55.00 for them each…and EZ Lap sounds right…but I can’t be sure. What do you guys use to clean yours….maybe there is just HSS from my skew in there….what kind of cleaner do you use?

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HokieKen

4303 posts in 919 days


#5 posted 09-21-2017 07:19 PM

I just use the “Gojo” hand cleaner I use for my hands Mike. It’s got a mild abrasive in it and I rinse the plate, squirt a little cleaner on it and scrub it with a toothbrush. Then rinse it good and blow it dry with compressed air. If you don’t have Gojo, some Ajax or similar mild scouring powder will work. If you don’t clean them regularly, there’s an excellent chance it’s just clogged with swarf, especially with finer stones.

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

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moke

1007 posts in 2557 days


#6 posted 09-21-2017 09:47 PM

Awesome Kenny!!!
Thank You…I’ll try it this weekend and get back to this thread in case someone else is following…
Mike

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ChuckV

3021 posts in 3307 days


#7 posted 09-21-2017 11:21 PM

DMT does not recommend using oil. There is some information here.

-- “Big man, pig man, ha ha, charade you are.” ― R. Waters

View TheFridge's profile

TheFridge

7939 posts in 1266 days


#8 posted 09-21-2017 11:48 PM

For me: Ezelap- still going strong. DMT- wore it out after lapping 2 plane irons while using it per manufacturers instructions. DMT exchanged it. After keeping it for months. The second is doing better.

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

View HokieKen's profile

HokieKen

4303 posts in 919 days


#9 posted 09-22-2017 02:05 AM

I have a Norton, 2 DMT and an EzLap. All were well-used when I bought them in an estate auction a couple years ago and all continue to be excellent plates for me.

I have heard some bad things about DMT from others though. Apparently they have/had some QA issues periodically. EZ Lap seems to be consistently well liked and I’ve been hearing good things about the Atomas Wahoo mentioned.

IMO if it’s electro-plated and truly flat, I’ll give it a shot.

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

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TheFridge

7939 posts in 1266 days


#10 posted 09-22-2017 01:49 PM

I have an atoma as well. It’s my fave.

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

View Carloz's profile

Carloz

758 posts in 372 days


#11 posted 09-22-2017 02:00 PM

they are no worn, you clogged them with oil. Use water with a few drops of dish cleaner instead. If anything the finest stone should last much longer than the coarse ones, but clogs much faster

View HokieKen's profile

HokieKen

4303 posts in 919 days


#12 posted 09-22-2017 02:16 PM

FWIW, if you started using oil for lubricant, I think you’ll have to continue to use oil. As you know, oil and water don’t mix. I doubt if water will be effective at removing swarf once oil has coated the plated surface.

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

View TheFridge's profile

TheFridge

7939 posts in 1266 days


#13 posted 09-22-2017 03:08 PM

Yeah dmt told me mine was clogged too. It only seemed like it was missing diamonds in the middle. They sent me a new one and an extra card sharpener. Because it was dirty.

If it’s oily just degrease. Brake cleaner works well. Don’t hesitate to use a wire brush to clean it. I use nothing but wd40 and I have zero problems.

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

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HokieKen

4303 posts in 919 days


#14 posted 09-22-2017 03:49 PM

Good to know Fridge. I use window cleaner a’la Paul Sellers. Works well for me.

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

View moke's profile

moke

1007 posts in 2557 days


#15 posted 09-22-2017 03:51 PM

Thanks guys, I will try all of these…I should have done some research but my Dad had always used oil so I thought I should too. I watched a Stmpy nubs video a few months back and he said not to use use so I switched to trend lapping oil. They are a little proud of that stuff!!

A few years ago I bought a “Credit Card” 300/600 sharpener that is a “trend”, it came with an eraser looking thing….maybe I should have tryed it. Duh!
But I will try these other fixes too….I’ll let you know Monday what worked..
Mike

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