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 Post subject: Diamond stone questions
PostPosted: Sun Aug 12, 2012 5:59 pm 
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Joined: Thu Apr 19, 2012 7:18 pm
Posts: 7887
Location: Madison Wisconsin
Hello!
I have some questions:

1) what grit of diamond stone is better for flattering shapton glass stones 1000 and 4000 grit ?
2) what is the difference between http://www.chefknivestogo.com/dmtextrafine.html and http://www.chefknivestogo.com/atoma1200pad.html ?

Thanks!



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 Post subject: Re: Diamond stone questions
PostPosted: Sun Aug 12, 2012 6:04 pm 
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Joined: Thu Apr 19, 2012 7:18 pm
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Location: Madison Wisconsin
Hi,

I almost always use a 140 grit diamond plate on all my stones. We have several. In price and quality order we offer:

This one is $25 and is fine for flattening. One of our top selling items on the site currently: http://www.chefknivestogo.com/140grdistflp.html

The DMT is better, longer lasting and a little flatter but almost tripple the price: http://www.chefknivestogo.com/dmtextracoarse.html

The Atoma is nice and very consistant and dead flat. It uses a mesh instead of diamonds bonded onto the plate and I like it except it's the most expensive at about 4-5 times the price of the first one:
http://www.chefknivestogo.com/at14dipl.html



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 Post subject: Re: Diamond stone questions
PostPosted: Sun Aug 12, 2012 6:32 pm 
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Joined: Mon Apr 23, 2012 4:45 am
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My favorite for this is the Atoma 400. Why? Well Shapton's flattening plates or diamond lapping plates are ~ 325 grit and not recommended for Shapton stones below 1k grit and even more stringently restricted for non Shapton stones. So the plates in this range are the Atoma 400 and the DMT coarse. Of these two, the Atoma 400 doesn't have a stiction problem. Also the texture is smoother from the 400 than the 140 grit choices.

Now this recommendation is based on you not letting your Glassstones get grossly out of being flat and just requiring maintenance level flattening. Your stones will last longer without taking them to the XXC or 140. If you let your stones dish, then a 140 Atoma is what you need.

The comparison between the 1200 Atoma and the 1200 grit DMT is a similar issue except that with this even finer grit, the stiction issues become EVEN more extreme. I have actually had stones stick so tightly to a lapping plate that they cracked in the process of pulling them apart. The 1200 Atoma is a clear winner for doing things like shaping fingerstones for sword and knife polishing, but that's yet another topic.

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Ken



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