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Diamond honing cards

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Forum topic by Jack Lewis posted 10-11-2017 07:53 PM 364 views 0 times favorited 5 replies Add to Favorites Watch
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Jack Lewis

188 posts in 861 days


10-11-2017 07:53 PM

Any thoughts or information on how fast diamond cards and files become unusable?

-- "Now we are getting no where, thanks to me"


5 replies so far

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msinc

88 posts in 286 days


#1 posted 10-11-2017 08:24 PM

It really depends on two things….the quality of the diamonds,which has to do with both the amount applied to the device and just how sharp they are, and the material you are sharpening. Cheaper hones don’t use as many diamonds, which is one way to cut costs. The better ones use plenty and, like wet-or-dry sandpaper, they do something to make them stand on edge so the sharp ends are up to do the cutting in a more efficient way.
Carbon steel knives will sharpen up easier and wear the hone a lot less than some of today’s wonder alloys like S30-V or 154. Bottom line, you get what you pay for with a diamond hone, but very hard tough steel will still wear even the best hone out quicker than typical alloys. Wish I could be more specific…in example, I can sharpen 10 high carbon steel knives to about 4-5 Buck knives but I am lucky to get one or two S30-V knives done with one set of hones. When sharpening knives I use the coarse grit ones the most. The medium lasts about double and I have not worn out the fine grit one yet. Of course, the fine gets the least amount of time on it and the coarse is used 75% of the job.

Edit: it is very important to use the proper honing oil or lube recommended by the manufacturer of the hones. I tried to substitute once and that put a lot of premature wear on my hones.

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LeeMills

438 posts in 1084 days


#2 posted 10-12-2017 07:07 PM

I have been using the same hones for a long long time. At the very least about 10 years …but I do try to get every nickles worth out of everything…they do still cut.
I use them with my flat tools (skews, parting tool, etc) and do not go back to the grinder. About six strokes on each side has it honed again. I am not sure of my brand but I think DMT is a well regarded brand.
I have never used a course since if they were that bad I would go back to the grinder.
I would go with the credit card size since they are two inches wide and allow easy honing of most lathe tools.
These are ones at Packard but lots of folks carry them and other brands may be as good or better.

http://www.packardwoodworks.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=packard&Category_Code=sharp-dmt-mshrp

-- We cannot solve our problems with the same thinking we used when we created them. Albert Einstein

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Karda

715 posts in 337 days


#3 posted 10-15-2017 09:22 PM

I haven’t been using them very long, but I did see an article where a guy had an expensive diamond hone for years and it became unusable and bought a new one. He later found out he was supposed to use water with them. he cleaned the original hone with soap and water.That made it as good as new. Good hone will last along time if kept cleaned

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ksSlim

1257 posts in 2673 days


#4 posted 10-15-2017 09:43 PM

Been using my DMT plates for about 10 yrs, I use Simple Green and water (equal parts ) as lube.
Simple Green prevents the swarf from rusting. If you feel your plates are “used up” get some “Bartenders Friend” and a tooth brush and give them a good cleaning.

-- Sawdust and shavings are therapeutic

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msinc

88 posts in 286 days


#5 posted 10-16-2017 12:03 AM

DMT are definitely some of the best there is. I think it’s “Bar Keepers Friend”.....another product very similar that will also do it is called “Zud”. Just to touch up chisels and lathe tools after grinding I think DMT hones will probably go a lot longer than 10 years as long as they are used with good lube. Using them to reset the edge on large knife blades… not going to last no where near that long.

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